HTML5+CSS3卡片抽出动画代码

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以下是 HTML5+CSS3卡片抽出动画代码的示例演示效果:

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部分效果截图:

HTML代码(index.html):

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>HTML5+CSS3卡片抽出动画</title>
    <link rel="stylesheet" href="css/style.css" media="screen" type="text/css" />
</head>
<body>
    <div class="container">
        <div class="folder">
            <div class="paper">
                <h1>Sample paper</h1>
                <p>Lorem ipsum dolor sit amets, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
                <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
                <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
            </div>
            <div class="cover">
                <div class="title">Don't open</div>
            </div>
        </div>
    </div>
    <script src='js/jquery.js'></script>
    <script src="js/index.js"></script>
</body>
</html>

JS代码(index.js):

$(document).on('click','.folder',function(){
	$(this).toggleClass('opened');
}
);

CSS代码(style.css):

/* Generates the negative triangle as part of a offset with:before and:after $location:Where you want the negative triangle [top,right,bottom,left] $position:In percentage where the negative triangle should be placed. With 50% the cut out triangle is in the center. $size:How much will the surface be extruded in order to cut out the triangle. Can be any valid size (px,em,rem,% etc.) $color:The color of the extruded part where the triangle gets cut out*/
*,*:before,*:after{box-sizing:border-box;}
html,body{height:100%;background-color:#644812;}
.container{position:relative;width:100%;height:100%;}
.container > .folder{width:220px;height:180px;left:calc(50% - 110px);top:calc(70% - 90px);position:absolute;}
.container > .folder > .cover{cursor:pointer;position:absolute;width:100%;height:100%;background-color:#fab62f;-moz-border-radius:0 0 10px 10px;-webkit-border-radius:0;border-radius:0 0 10px 10px;-moz-box-shadow:5px 5px rgba(0,0,0,0.2);-webkit-box-shadow:5px 5px rgba(0,0,0,0.2);box-shadow:5px 5px rgba(0,0,0,0.2);}
.container > .folder > .cover:before,.container > .folder > .cover:after{box-sizing:border-box;content:"";display:block;position:absolute;top:-100px;border:50px solid transparent;}
.container > .folder > .cover:before{left:0;width:50%;border-left:none;border-bottom-color:#fab62f;}
.container > .folder > .cover:after{right:0;width:50%;border-right:none;border-bottom-color:#fab62f;}
.container > .folder > .cover > .title{position:absolute;padding:1em;font-family:Arial,Helvetica,sans-serif;text-transform:uppercase;font-weight:bold;text-align:center;font-size:2.5em;color:rgba(0,0,0,0.1);-moz-user-select:-moz-none;-ms-user-select:none;-webkit-user-select:none;user-select:none;-moz-transform:rotate(20deg);-ms-transform:rotate(20deg);-o-transform:rotate(20deg);-webkit-transform:rotate(20deg);transform:rotate(20deg);}
.container > .folder > .paper{opacity:1;position:absolute;overflow:hidden;width:200px;height:200px;top:calc(50% - 150px);left:calc(50% - 100px);transition:top 0.5s,opacity 0.4s;font-family:Verdana,Tahoma,sans-serif;font-size:0.1em;padding:1em;color:#644812;background-color:#fde1ab;-moz-box-shadow:10px 10px rgba(0,0,0,0.2);-webkit-box-shadow:10px 10px rgba(0,0,0,0.2);box-shadow:10px 10px rgba(0,0,0,0.2);-moz-border-radius:5px;-webkit-border-radius:5px;border-radius:5px;}
.container > .folder:hover > .paper{top:calc(50% - 200px);}
.container > .folder.opened > .paper{top:calc(-500px);opacity:0;}

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