.w3-text,body,h1,h2,h3,h4,h5,h6,html,p{font-family:LXGW WenKai Screen,Lantinghei SC,Heiti SC,Microsoft YaHei,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,segoe ui,Roboto,helvetica neue,Arial,noto sans,sans-serif,apple color emoji,segoe ui emoji,segoe ui symbol,noto color emoji;word-break:break-all}h1>a:hover{text-decoration:none}.w3-text,h1,h2,h3,h4,h5,h6,p{line-height:1.8em}body{padding-top:70px}.w3-margin-top-32{margin-top:32px!important}@media (max-width:600px){#layout-wrap{margin:4px 4px!important}.w3-large{font-size:16px!important}body{padding-top:50px}.hi-breadcrumbs{margin-top:16px;margin-left:12px;padding:4px 16px;margin:4px 0!important}.container.alert{width:calc(100% - 8px);margin-top:20px}}@media (min-width:1200px){.container{width:980px}}.navbar-brand{animation:fadeInAnimation ease .5s;animation-iteration-count:1;animation-fill-mode:forwards}@keyframes fadeInAnimation{0%{opacity:0}50%{opacity:.5}100%{opacity:1}}footer{width:100%;padding:5px 0;color:#666;font-size:.85em;text-align:left}a:active,a:hover{color:#043448}table.w3-table-all{margin:20px 0}.top{position:relative;background-color:#fff;height:68px;padding-top:20px;line-height:50px;overflow:hidden;z-index:2}.w3schools-logo{font-family:fontawesome;text-decoration:none;line-height:1;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:37px;letter-spacing:3px;color:#555;display:block;position:absolute;top:17px}.w3schools-logo .dotcom{color:#4caf50}.topnav{position:relative;z-index:2;font-size:17px;background-color:#5f5f5f;color:#f1f1f1;width:100%;padding:0;letter-spacing:1px;font-family:"Segoe UI",Arial,sans-serif}.topnav a{padding:10px 15px 9px 15px!important}.topnav .w3-bar a:focus,.topnav .w3-bar a:hover{background-color:#000!important;color:#fff!important}.topnav .w3-bar a.active{background-color:#4caf50;color:#fff}a.topnav-icons{width:52px!important;font-size:20px!important;padding-top:11px!important;padding-bottom:13px!important}a.topnav-icons.fa-home{font-size:22px!important}a.topnav-icons.fa-menu{font-size:22px!important}a.topnav-localicons{font-size:20px!important;padding-top:6px!important;padding-bottom:12px!important}i.fa-caret-down,i.fa-caret-up{width:10px}.hi-hover-blue:focus,.hi-hover-blue:hover,.hi-nav-search-button a:active,.hi-nav-search-button a:focus,.hi-nav-search-button a:hover{background-color:#cef;color:#23527c}.hi-no-underline{text-decoration:none!important}#navbar .navbar-nav{font-weight:600;color:#fff}@media (min-width:600px) and (max-width:768px){ul.nav.navbar-nav.navbar-left i.fa{display:none}}#sidenav h2{font-size:21px;padding-left:16px;margin:-4px 0 4px 0;width:204px}#sidenav a{font-family:"Segoe UI",Arial,sans-serif;text-decoration:none;display:block;padding:2px 1px 1px 16px}#sidenav a:focus,#sidenav a:hover{color:#000;background-color:#ccc}#sidenav a.active{background-color:#4caf50;color:#fff}#sidenav a.activesub:link,#sidenav a.activesub:visited{background-color:#ddd;color:#000}#sidenav a.activesub:active,#sidenav a.activesub:hover{background-color:#ccc;color:#000}#leftmenuinner{position:fixed;top:0;padding-top:112px;padding-bottom:0;height:100%;width:220px;background-color:transparent}#leftmenuinnerinner{height:100%;width:100%;overflow-y:scroll;overflow-x:hidden;padding-top:20px}#main{padding:16px}#mainLeaderboard{height:90px}#right{text-align:center;padding:16px 16px 0 0}#right a{text-decoration:none}#right a:hover{text-decoration:underline}#skyscraper{min-height:600px}.sidesection{margin-bottom:32px}#sidesection_exercise a{display:block;padding:4px 10px}#sidesection_exercise a:active,#sidesection_exercise a:hover{background-color:#ccc;text-decoration:none;color:#000}.bottomad{padding:0 16px 16px 0;float:left;width:auto}.footer a{text-decoration:none}.footer a:hover{text-decoration:underline}#nav_exercises,#nav_references,#nav_tutorials{-webkit-overflow-scrolling:touch;overflow:auto}#nav_exercises::-webkit-scrollbar,#nav_references::-webkit-scrollbar,#nav_tutorials::-webkit-scrollbar{width:12px}#nav_exercises::-webkit-scrollbar-track,#nav_references::-webkit-scrollbar-track,#nav_tutorials::-webkit-scrollbar-track{background:#555}#nav_exercises::-webkit-scrollbar-thumb,#nav_references::-webkit-scrollbar-thumb,#nav_tutorials::-webkit-scrollbar-thumb{background:#999}#nav_exercises,#nav_references,#nav_tutorials{display:none;letter-spacing:0;margin-top:44px}#nav_exercises a,#nav_references a,#nav_tutorials a{padding:2px 0 2px 6px!important}#nav_exercises a:focus,#nav_references a:focus,#nav_tutorials a:focus{color:#000;background-color:#ccc}#nav_exercises h3,#nav_references h3,#nav_tutorials h3{padding-left:6px}.ref_overview{display:none}.w3-example{background-color:#f1f1f1;padding:.01em 16px;margin:20px 0;box-shadow:0 2px 4px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12)!important}.nextprev a{font-size:17px;border:1px solid #ccc}.nextprev a:link,.nextprev a:visited{background-color:#fff;color:#000}.nextprev a:focus,.w3-example a:focus{box-shadow:0 8px 16px 0 rgba(0,0,0,.2),0 6px 20px 0 rgba(0,0,0,.19)}.nextprev a.w3-left,.nextprev a.w3-right{background-color:#4caf50;color:#fff;border-color:#4caf50}#w3-exerciseform{background-color:#555;padding:16px;color:#fff}#w3-exerciseform .exercisewindow{background-color:#fff;padding:16px;color:#000}#w3-exerciseform .exerciseprecontainer{background-color:#f1f1f1;padding:16px;font-size:120%;font-family:Consolas,"Courier New",Courier,monospace}#w3-exerciseform .exerciseprecontainer pre{display:block}#w3-exerciseform .exerciseprecontainer input{padding:1px;border:1px solid transparent;height:1.3em}.w3-theme{color:#fff!important;background-color:#73ad21!important;background-color:#4caf50!important}.w3-theme-border{border-color:#4caf50!important}.sharethis a:hover{color:inherit}.fa-facebook-square,.fa-google-plus-square,.fa-twitter-square{padding:0 8px}.fa-facebook-square:hover,.fa-thumbs-o-up:hover{color:#3b5998}.fa-twitter-square:hover{color:#55acee}.fa-google-plus-square:hover{color:#dd4b39}#google_translate_element img{margin-bottom:-1px}#googleSearch{color:#000}#googleSearch a{padding:0!important}.searchdiv{max-width:400px;margin:auto;text-align:left;font-size:16px}div.cse .gsc-control-cse,div.gsc-control-cse{background-color:transparent;border:none;padding:6px;margin:0}td.gsc-search-button input.gsc-search-button{background-color:#4caf50;border-color:#4caf50}td.gsc-search-button input.gsc-search-button:hover{background-color:#46a049}.gsc-input-box,.gsc-input-box-focus,.gsc-input-box-hover,.gsc-search-button,input.gsc-input{box-sizing:content-box;line-height:normal}.gsc-tabsArea div{overflow:visible}.w3-main{transition:margin-left 0s}.hi-blue{color:#fff;background-color:#2157f3!important}.hi-text-blue{color:#2157f3!important}.hi-dark{background-color:#3367d6!important;color:#fff!important}.hi-text-dark{color:#203658!important}.hi-light-dark{background-color:#4183c4!important;color:#fff!important}.hi-text-light-dark{color:#4183c4!important}@media (min-width:1675px){#main{width:79%}#right{width:21%}}@media (max-width:992px){.top{height:100px}.top img{display:block;margin:auto}.top .w3schools-logo{position:relative;top:0;width:100%;text-align:center;margin:auto}.toptext{width:100%;text-align:center}#sidenav{width:260px;box-shadow:0 3px 6px rgba(0,0,0,.16),0 3px 6px rgba(0,0,0,.23)}#sidenav h2{font-size:26px;width:100%}#sidenav a{padding:3px 2px 3px 24px;font-size:17px}#leftmenuinner{overflow:auto;-webkit-overflow-scrolling:touch;height:100%;position:relative;width:auto;padding-top:0;background-color:#f1f1f1}#leftmenuinnerinner{overflow-y:scroll}.bottomad{float:none;text-align:center}#skyscraper{min-height:60px}}.hi-nav-search-button a:active,.hi-nav-search-button a:focus,.hi-nav-search-button a:hover{background-color:transparent;color:#fff}@media screen and (max-width:600px){.hi-hover-blue:focus,.hi-hover-blue:hover{background-color:transparent;color:auto}.hi-nav-search-button a:active,.hi-nav-search-button a:focus,.hi-nav-search-button a:hover{background-color:transparent;color:#fff}#w3-exerciseform,.w3-example,.w3-note{margin-left:-16px;margin-right:-16px}.top{height:68px}.toptext{display:none}}.fa{display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transform:translate(0,0)}span.deprecated,span.marked{color:#e80000;background-color:transparent}.intro{font-size:16px}.w3-btn,.w3-btn:link,.w3-btn:visited{color:#fff;background-color:#4caf50}a.w3-btn[href*="exercise.asp"],a.w3-btn[href*="exercise_js.asp"]{margin:10px 5px 0 0}a.btnplayit,a.btnplayit:link,a.btnplayit:visited{background-color:#ffad33;padding:1px 10px 2px 10px}a.btnplayit:active,a.btnplayit:hover{background-color:#fff;color:#ffad33}a.btnplayit:hover{box-shadow:0 4px 8px 0 rgba(0,0,0,.2)}a.btnsmall:active,a.btnsmall:hover,a.btnsmall:link,a.btnsmall:visited{float:right;padding:1px 10px 2px 10px;font:15px Verdana,sans-serif}a.btnsmall:hover{box-shadow:0 4px 8px 0 rgba(0,0,0,.2)}a.btnsmall:active,a.btnsmall:hover{color:#4caf50;background-color:#fff}.tagcolor{color:#0000cd}.tagnamecolor{color:brown}.hi-header{color:#555;margin-top:32px}.hi-main{margin:0 auto}.hi-main>*{padding:0 50px}@media (max-width:600px){.hi-main>*{padding:0 16px}}.hi-header,.hi-main{max-width:100%}.homepage-tweet-body .hi-main>*{padding:0}.hi-excerpt h1{font-size:18px}@media only screen and (max-device-width:600px){.hi-excerpt h1{font-size:16px}#w3-exerciseform .exerciseprecontainer,.w3-code,.w3-codespan{font-family:"Source Code Pro",Menlo,Consolas,monospace}.w3-code{font-size:14px}.w3-codespan{font-size:15px}#w3-exerciseform .exerciseprecontainer{font-size:15px}#w3-exerciseform .exerciseprecontainer input{padding:0;height:1.5em}}@media screen and (max-width:700px){#mainLeaderboard{height:60px}#div-gpt-ad-1422003450156-0{float:none;margin-left:auto;margin-right:auto}#div-gpt-ad-1422003450156-3{float:none;margin-left:auto;margin-right:auto}}@media (max-width:1700px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(17){display:none}}@media (max-width:1600px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(13){display:none}}@media (max-width:1510px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(12){display:none}}@media (max-width:1450px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(11){display:none}}@media (max-width:1330px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(10){display:none}}@media (max-width:1200px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(9){display:none}}@media (max-width:1100px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(8){display:none}}@media (max-width:1000px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(7){display:none}}@media (max-width:992px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(6){display:none}}@media (max-width:930px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(18){display:none}}@media (max-width:800px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(19){display:none}}@media (max-width:650px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(5){display:none}#topnav .w3-bar:nth-of-type(1) a:nth-of-type(16){display:none}}@media (max-width:460px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(4){display:none}}@media (max-width:400px){#topnav .w3-bar:nth-of-type(1) a:nth-of-type(3){display:none}}.navbar-brand,.navbar-nav>li>a{text-shadow:none}.w3-note{background-color:#ffc;border-left:6px solid #ffeb3b}.w3-warning{background-color:#fdd;border-left:6px solid #f44336}.w3-info{background-color:#dfd;border-left:6px solid #4caf50}.w3-padding-0{padding:0!important}.w3-padding-top-0{padding-top:0!important}.w3-padding-left-0{padding-left:0!important}.w3-padding-right-0{padding-right:0!important}.w3-padding-bottom-0{padding-bottom:0!important}.w3-margin-0{margin:0!important}.w3-margin-top-0{margin-top:0!important}.w3-margin-left-0{margin-left:0!important}.w3-margin-right-0{margin-right:0!important}.w3-margin-bottom-0{margin-bottom:0!important}hr[id^=ez-insert-after-placeholder]{margin-top:0}.phonebr{display:none}@media screen and (max-width:475px){.phonebr{display:initial}.user-body .w3-ul li:first-of-type .hi-excerpt{padding-top:0}.w3-xlarge{font-size:22px!important}}.hi-excerpt{border-bottom:1px dashed #ddd;padding:32px 0}.hi-post-type-post .hi-excerpt-text{display:none}.hi-main .w3-ul li{padding:0}.homepage-tweet-body .hi-main .w3-ul li{padding:0 50px}@media screen and (max-width:475px){.homepage-tweet-body .hi-main .w3-ul li{padding:0 16px;margin-bottom:6px!important}}.hi-content-wrap:before{content:"";height:1px;width:100px;background:#eee;display:block;margin:16px auto 20px}h1,h2,h3,h4,h5,h6{font-weight:600!important;color:#203658;margin:8px 0}.hi-header .hi-title{display:inline-block;margin:auto;text-align:justify;margin-top:16px;margin-bottom:8px;padding:0 16px;max-width:90%}.hi-view-in-osc-link{text-rendering:optimizelegibility;font-family:brandon-grotesque;font-size:.9em;letter-spacing:.25em;line-height:2.2em;text-transform:uppercase}.hi-underline{text-decoration:underline}.hi-underline-dotted{text-decoration:underline dotted}.hi-text-grey{color:#888}.hi-light-grey{background-color:#ecf0f1!important}.responsive-youtube{overflow:hidden;padding-bottom:56.25%;position:relative;height:0}.responsive-youtube iframe{left:0;top:0;height:100%;width:100%;position:absolute}.responsive-meting{overflow:hidden;padding-bottom:62.5%;position:relative;height:0}.responsive-meting iframe{left:0;top:0;height:100%;width:100%;position:absolute;border:none}.hi-excerpt .hi-meta.w3-small,a.nickname{font-size:90%;color:#888}.hi-excerpt .hi-meta.w3-small .hi-date{font-weight:400;background:#f4f4f4;padding:2px 4px;border-radius:4px;padding-left:8px}.hi-text-lighter-blue,a.nickname{color:#203658;opacity:.75}.hi-lighter-blue{background-color:#4183c4}.hi-excerpt :not(code).w3-small{font-weight:600;font-size:14px!important;color:#888;margin-bottom:0;opacity:.9}.hi-tweet-content-wrap .hi-excerpt :not(code).w3-small{font-size:14px!important}.hi-excerpt .hi-meta.w3-small{margin-top:8px}#back2Top{cursor:pointer;text-align:center;text-decoration:none;background:#fff}#back2Top:hover{opacity:.8}.hi-navbar.navbar-collapse.in{overflow-y:visible}.nav>li.on>a,.nav>li>a:focus,.nav>li>a:hover{background-color:#cef;color:#23527c}.hi-dot::before{content:"\2022";color:#ccc;margin:0 5px 0 3px;display:inline-block}.hn-wrap{display:block!important}.hn-wrap>ol{padding-inline-start:16px}li.hn-item{list-style-position:outside}.hn-title img{padding-right:16px!important}.hn-item>a{font-family:"Open Sans","Microsoft YaHei","Hiragino Sans GB","Hiragino Sans GB W3","微软雅黑","Helvetica Neue",Arial,sans-serif}.hn-item>div h2{margin:0 4px 0 0!important}.hn-item>div h2 code.hi{background-color:transparent!important;padding-left:0!important}.hn-item>div h2,.hn-item>div ul{display:inline-block}.hn-item>a strong{color:#f60}@media (max-width:480px){.hn-item>p{display:block}}.hn-item>cite,.hn-item>div ul{color:#888}.hn-item>cite::after{content:" ";display:block}.hn-item ul>li{list-style-type:none;font-size:14px}body{overflow-x:hidden;display:flex;flex-direction:column;justify-content:space-between;min-height:100vh;background-image:url(https://oscimg.cellmean.com/oscnet/up-6d0fcd96bdffbc27b358e529e60c695f778.JPEG);color:#34495e;background-attachment:scroll;background-clip:border-box;background-origin:padding-box;background-position:0 0;background-repeat:repeat;background-size:auto}body.night{background-image:url(https://oscimg.cellmean.com/oscnet/up-a1c40b19546bd884ec669a7550bb12a609a.JPEG)}.night .hi-form,.night .hi-form-title{color:#fff}.hi-bg-blue{background-image:none!important}.hi-author-bg{background-size:cover;background-image:url(https://photo.cellmean.com/i/2024/11/30/r10gtl-0.jpeg)!important;background-position:0 0,0 50%;background-repeat:no-repeat}.hi-bg-blue{background-color:#0599d2}.hi-bg-darkblue,body.night nav{background-image:url(https://oscimg.cellmean.com/oscnet/up-38b5fb9be09aa162a46151e00d95de8a.jpg)!important;background-color:#767b96}.hi-author-bg-12 footer,.hi-bg-lines footer{background-image:none}.hi-bg-linear{background-image:linear-gradient(180deg,#0599d2 5%,#c28698 100%)}.hi-bg-translucent{background-color:rgba(255,255,255,.25)}.hi-text-aliceblue{color:#f0f8ff!important}.hi-text-bisque{color:bisque!important}#layout{padding:0;background-color:#fff;margin-bottom:48px;padding-bottom:48px}.homepage-tweet-body #layout{margin-bottom:0}.hi-content-wrap:after{content:"";height:1px;width:100%;background:#eee;display:none;margin:15px auto 20px}body:not(.search-body) .hi-search-form-wrap{position:fixed;padding:0 16px;z-index:1024;top:100px;left:50%;margin:0 auto;transform:translate(-50%,-50%)}@media screen and (max-width:600px){body:not(.search-body) .hi-search-form-wrap{top:130px}}.hi-search-form-wrap{margin-bottom:16px;margin-top:16px;background-color:rgba(255,255,255,.9)}.hi-search-form{width:100%;position:relative;margin-bottom:16px;z-index:2;overflow-y:hidden;transition-property:margin,max-height;transition-duration:.3s;margin-top:106px;transition-timing-function:linear}.search-body .hi-search-form{margin-top:32px}.hi-search-form .hi-hot-keywords-container{margin-top:.5rem;justify-content:left;align-items:center;padding-left:0}.hi-search-form .hi-hot-keywords-container h3{margin-top:0!important;margin-bottom:0!important;font-size:1rem}.hi-search-form .hi-hot-keywords-container .hot-keywords-ul{margin-top:0!important;margin-bottom:0!important;margin-left:0}.hi-search-form .hi-hot-keywords-container .hot-keywords-ul li{background-color:transparent!important;margin-right:.5rem!important}.hi-search-form.closed{max-height:0;margin-bottom:0;margin-top:0}.hi-search-form.closed *{display:none}.hi-search-form input[type=text]{width:100%;font:18px/40px lato,helvetica neue,Helvetica,Arial,sans-serif;-webkit-appearance:none;-moz-appearance:none;border:2px solid #bbb;border-radius:4px;padding-left:8px;padding-top:1px;padding-bottom:1px;height:42px}.hi-search-form input[type=text]:focus,.search-body .hi-search-form input[type=text]{border-color:#4183c4}.hi-search-form button{position:absolute;top:4px;right:4px;height:34px;width:100px;background:#5badf0;color:#fff;border:none;padding:0;-webkit-appearance:none;-moz-appearance:none;border-radius:4px;cursor:pointer;letter-spacing:1px;text-transform:uppercase;font:600 14px/1 lato,helvetica neue,Helvetica,Arial,sans-serif}@media only screen and (max-device-width:480px){#layout{margin-bottom:8px;padding-bottom:8px}.responsive-meting{padding-bottom:138.5%}.hi-navbar .w3-dropdown-content,.hi-navbar .w3-dropdown-hover{width:100%}.hi-header{margin-top:16px}.hi-header .hi-title{padding:0 16px;margin-top:24px}.hi-search-form-wrap{padding:0 16px!important;margin-top:8px}}.gallery-wrap{width:100%}div.gallery{overflow:hidden;position:absolute;top:0;width:100%;height:100%;padding:2px}div.gallery img{cursor:pointer;width:100%;height:100%;object-fit:cover;transition:all .3s ease-out}div.gallery img:hover{transform:scale(1.3)}div.desc{padding:15px;text-align:center}.responsive{padding:0;float:left;width:31.5%;transition:all .3s ease-out;cursor:pointer;padding-top:31.5%;height:0;overflow:hidden;position:relative;margin:.5%}@media only screen and (min-width:700px){.responsive{width:152px;padding-top:150px}}.clearfix:after{content:"";display:table;clear:both}.hi-modal-content{min-height:100px}.hi-modal{background:rgba(0,0,0,.6);position:fixed;top:0;left:0;height:100%;width:100%;z-index:1050;opacity:0;pointer-events:none;transition:all .25s ease-out}.hi-modal.open{opacity:1;pointer-events:all}.hi-modal .full-img{position:absolute;top:50%;left:50%;max-height:80%;max-width:80%;transform:translate(-50%,-50%) scale(.5);transition:all .25s ease-out}.hi-modal .full-img.open{transform:translate(-50%,-50%) scale(1)}.hi-modal .caption{color:#fff;font-size:.2rem;position:absolute;bottom:5%;left:50%;transform:translate(-50%,-5%)}@media only screen and (max-width:480px){.hi-modal .full-img{max-width:90%;height:auto}.navbar-toggle{margin-right:6px}}.hi-input-section{display:inline-block;margin-right:8px}input[type=checkbox]:checked+label,input[type=radio]:checked+label{color:#275efe}@supports (-webkit-appearance:none) or (-moz-appearance:none){input[type=checkbox],input[type=radio]{--active:#275efe;--active-inner:#fff;--focus:2px rgba(39, 94, 254, 0.3);--border:#bbc1e1;--border-hover:#275efe;--background:#fff;--disabled:#f6f8ff;--disabled-inner:#e1e6f9;-webkit-appearance:none;-moz-appearance:none;height:21px;outline:0;display:inline-block;vertical-align:top;position:relative;margin:0;cursor:pointer;border:1px solid var(--bc,var(--border));background:var(--b,var(--background));-webkit-transition:background .3s,border-color .3s,-webkit-box-shadow .2s;transition:background .3s,border-color .3s,-webkit-box-shadow .2s;transition:background .3s,border-color .3s,box-shadow .2s;transition:background .3s,border-color .3s,box-shadow .2s,-webkit-box-shadow .2s}input[type=checkbox]:after,input[type=radio]:after{content:"";display:block;left:0;top:0;position:absolute;-webkit-transition:opacity var(--d-o,.2s),-webkit-transform var(--d-t,.3s) var(--d-t-e,ease);transition:opacity var(--d-o,.2s),-webkit-transform var(--d-t,.3s) var(--d-t-e,ease);transition:transform var(--d-t,.3s) var(--d-t-e,ease),opacity var(--d-o,.2s);transition:transform var(--d-t,.3s) var(--d-t-e,ease),opacity var(--d-o,.2s),-webkit-transform var(--d-t,.3s) var(--d-t-e,ease)}input[type=checkbox]:checked,input[type=radio]:checked{--b:var(--active);--bc:var(--active);--d-o:0.3s;--d-t:0.6s;--d-t-e:cubic-bezier(0.2, 0.85, 0.32, 1.2)}input[type=checkbox]:disabled,input[type=radio]:disabled{--b:var(--disabled);cursor:not-allowed;opacity:.9}input[type=checkbox]:disabled:checked,input[type=radio]:disabled:checked{--b:var(--disabled-inner);--bc:var(--border)}input[type=checkbox]:disabled+label,input[type=radio]:disabled+label{cursor:not-allowed}input[type=checkbox]:hover:not(:checked):not(:disabled),input[type=radio]:hover:not(:checked):not(:disabled){--bc:var(--border-hover)}input[type=checkbox]:focus,input[type=radio]:focus{-webkit-box-shadow:0 0 0 var(--focus);box-shadow:0 0 0 var(--focus)}input[type=checkbox]:not(.switch),input[type=radio]:not(.switch){width:21px}input[type=checkbox]:not(.switch):after,input[type=radio]:not(.switch):after{opacity:var(--o,0)}input[type=checkbox]:not(.switch):checked,input[type=radio]:not(.switch):checked{--o:1}input[type=checkbox]+label,input[type=radio]+label{font-size:14px;line-height:21px;display:inline-block;vertical-align:top;cursor:pointer;margin-left:4px}input[type=checkbox]:not(.switch){border-radius:7px}input[type=checkbox]:not(.switch):after{width:5px;height:9px;border:2px solid var(--active-inner);border-top:0;border-left:0;left:7px;top:4px;-webkit-transform:rotate(var(--r,20deg));transform:rotate(var(--r,20deg))}input[type=checkbox]:not(.switch):checked{--r:43deg}input[type=checkbox].switch{width:38px;border-radius:11px}input[type=checkbox].switch:after{left:2px;top:2px;border-radius:50%;width:15px;height:15px;background:var(--ab,var(--border));-webkit-transform:translateX(var(--x,0));transform:translateX(var(--x,0))}input[type=checkbox].switch:checked{--ab:var(--active-inner);--x:17px}input[type=checkbox].switch:disabled:not(:checked):after{opacity:.6}input[type=radio]{border-radius:50%}input[type=radio]:after{width:19px;height:19px;border-radius:50%;background:var(--active-inner);opacity:0;-webkit-transform:scale(var(--s,.7));transform:scale(var(--s,.7))}input[type=radio]:checked{--s:0.5}}.hi-tweet-content{word-break:break-all}.hi-tweet-content>br{display:block;height:.4rem;width:100%;content:" "}.hi-tweet-content>br+br{height:.1rem}.hi-tweet-content a{word-break:break-all;color:#0073cc!important}.hi-tweet-content a[href*="&kw=%23"]{padding:0 .5rem;border-radius:.25rem!important;font-size:.9rem;display:inline-block;background-color:#2d709b;color:#fff!important;line-height:1.4rem;transition:all .3s ease-in-out;text-decoration:none!important}.hi-tweet-content a[href*="&kw=%23"]:focus,.hi-tweet-content a[href*="&kw=%23"]:hover{opacity:.8}.hi-tweet-content a[href*="&kw=%23"]::selection{background:0 0}.login-body input.form-control,.register-body input.form-control{background-color:rgba(255,255,255,.5)}.login-body footer,.register-body footer{visibility:hidden}.hi-form{width:100%}.login-body,.register-body,.register-post-body #layout{justify-content:space-around}.login-body #layout,.login-post-body #layout,.register-body #layout,.register-post-body #layout{background-color:transparent;width:100%;margin-bottom:48px;margin-top:0;padding:0 16px}.hi-form-title{text-align:center}.hi-error-panel{list-style:inside;color:#203658}.hi-flash-panel ul{margin:0;padding:0}@media screen and (min-width:601px){.login-body #layout,.login-post-body #layout,.register-body #layout,.register-post-body #layout{width:60%;margin-top:48px}}@media screen and (min-width:1025px){.login-body #layout,.login-post-body #layout,.register-body #layout,.register-post-body #layout{width:35%}}.hi-tweet-content-wrap{margin-bottom:0}.hi-comments{margin:0;list-style:none;background:#fff;padding-top:24px;padding-bottom:16px}.hi-comments:not(.hi-tweet-ref)::after{content:"EOF";color:rgba(32,54,88,.6);display:block;text-align:center;letter-spacing:4px;margin-top:4px;opacity:.6;font-weight:600}.hi-comments>li{display:grid;grid-template-columns:50px auto;grid-column-gap:12px;grid-row-gap:4px;justify-items:start;padding:8px 0}.hi-tweet-ref{margin-top:16px;padding:0}.hi-tweet-ref>li{grid-template-columns:auto 20px}#layout-wrap .hi-tweet-ref .tweet-about{background-color:#f4f4f4;border:none;padding:24px 16px 24px 24px!important}.portrait img{border-radius:50%;width:50px;height:50px;border:.5px solid #ccc;padding:1px;max-width:100%}.tweet-likes-list .portrait img{width:24px;height:24px}.hi-comments>li .comment-footer{grid-column-start:2;grid-column-end:3}.hi-comments .comment-head{display:grid;grid-column-gap:8px;width:100%;grid-row-gap:4px;align-items:top}.comment-author,.hi-tweet-header-wrap .tweet-author,.tweet-author{font-weight:600;color:#203658!important}.comment-pubdate,.tweet-pubdate{color:#888}.hi-comments .comment-pubdate{text-align:right;font-size:12px}.hi-comments .comment-head .comment-content{grid-column-start:1;grid-column-end:3;word-break:break-all}.homepage-tweet-body #layout,.tweet-content-body #layout{background:0 0;padding:0}.hi-content-tail-wrap{display:flex;align-items:baseline}.tweet-view-wrap{width:5rem}.tweet-view-wrap #article-views{display:inline-block;min-width:1.5rem;text-align:left}.tweet-likes-list-wrap{display:grid;grid-template-columns:minmax(32px,40px) auto;grid-template-rows:28px auto;column-gap:4px;margin-top:8px!important;width:calc(100% - 3.2rem)}.tweet-likes-list-wrap h4{margin:0;padding:0;line-height:1.6}.tweet-likes-list{display:grid;column-gap:4px;grid-template-columns:repeat(auto-fill,24px)}.tweet-content-body .hi-excerpt{padding:16px 0}.homepage-tweet-body .hi-excerpt{border:none}.hi-tweet-content-wrap ul{padding-left:0}.hi-tweet-content-wrap,.homepage-tweet-body #layout-wrap li,.tweet-content-body #layout-wrap li{background-color:#fff}.hi-lead-title{margin-top:16px!important;margin-bottom:0!important;width:auto;background-color:#fff;padding:8px 12px;border:none;word-wrap:break-word;background:#f4f4f4}.hi-no-comment{background:#fff}.hi-comments:not(.hi-tweet-ref) li::after{content:"";height:1px;width:calc(100% - 4px);background:#eee;display:block;margin:8px auto;grid-column-start:2;grid-column-end:3}.hi-tweet-header-wrap{display:grid;grid-template-columns:50px auto 40px;grid-column-gap:12px}.hi-tweet-header-wrap .portrait{grid-row-start:1;grid-row-end:3}.hi-tweet-header-wrap .tweet-pubdate{grid-row-start:2;grid-row-end:4}.tweet-mark{font-size:12px;text-align:center;font-weight:700;background:#3367d6;color:#fff;padding:2px 4px}#layout .tweet-mark a{color:#fff!important}dt.hi-text-grey{font-weight:400}.hi-logo{font-weight:600;box-shadow:inset -1px 0 0 rgba(0,0,0,.1),1px 0 0 rgba(255,255,255,.1),inset 1px 0 0 rgba(0,0,0,.1),-1px 0 0 rgba(255,255,255,.1)}::selection{background:#fef4ad}.btn-form-tail{display:flex;justify-content:space-between;align-items:flex-end}.collection-item p{min-height:64px}.collection-item{margin-bottom:32px;transition:all .3s ease-in-out}a.collection-item:focus,a.collection-item:hover{text-decoration:none;transform:scale(1.04)}a.collection-item:focus .w3-opacity,a.collection-item:hover .w3-opacity{opacity:1}.colletion-detail-body header{display:flex;margin:3rem}.collection-cover{width:100%;padding-top:100%;background-color:#0599d2;background-size:cover;background-repeat:no-repeat;background-position:center}.collection .collection-cover-wrap{flex:1;margin-right:2rem}.collection .detail{flex:3}.collection-cover-wrap .collection-cover{padding-top:133.3%}.colletion-detail-body .detail p{margin-top:.5rem}.collections-wrap{display:flex;flex-direction:row;flex-wrap:wrap}img.not-found{max-width:50%}@media (max-width:600px){.pagination.w3-bar a.w3-bar-item{margin:0 .28rem}.colletion-detail-body header{display:block}.collection .collection-cover-wrap{margin-right:0}img.not-found{max-width:90%}}.hi-toolkit{text-align:right}a.w3-button:focus,a.w3-button:hover{text-decoration:none}.hi-main .hi-collection-bar{background:#eee;padding:2rem 0}.hi-preivew-lable{margin-right:4px}a[title="复制代码"]{display:none}.solo-container{margin-top:4rem}body.solo-layout{background-image:none;padding-top:16px;justify-content:flex-start}.sns-login-div{margin-bottom:36px!important;display:flex;justify-content:space-between;flex-wrap:wrap}.sns-login-div>a{text-decoration:none;width:48%;margin-top:16px}@media (min-width:600px){.sns-login-div.wider>a{width:22%}}.hi-list{display:flex;flex-direction:column}.related-stories{border-radius:4px;border-width:1px;border-style:solid;border-color:#e5e5e5;padding:24px 36px}.related-stories .story{position:relative;padding-left:1.25rem;margin-bottom:1rem;margin-top:1rem;line-height:1.25rem}.story>:first-child::before{color:#000;content:"•";position:absolute;left:0;font-size:14px;font-weight:700}.top-pagination{margin-top:12px}.pagination.w3-bar .w3-bar-item{float:left;width:auto;border:none;display:block;outline:0;margin:0 .4rem;background:#eee;border-radius:.5rem;box-shadow:0 4px 10px rgba(0,2,4,.06),0 0 1px rgba(0,2,4,.11)}.pagination.w3-bar a.w3-bar-item:first-of-type{margin-left:0}.pagination.w3-bar a.w3-bar-item:last-of-type{margin-right:0}.hi-weight-normal{font-weight:400}.hi-margin-right-small{margin-right:.4rem}.ad-container{display:flex;justify-content:center}.adsbygoogle[data-adsbygoogle-status=done]{display:block!important}.adsbygoogle[data-ad-status=unfilled]{display:none!important}.hot-keywords-ul{display:flex;flex-wrap:wrap;margin-top:2rem}