3D立体动画效果侧导航

效果图

index.html

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    <title>index</title>
    <link rel="stylesheet" href="css/style.css">
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<script src='https://libs.baidu.com/jquery/1.10.2/jquery.min.js'></script>
<script src='js/script.js'></script>
</body>
</html>

style.css

@charset "utf-8";
  html,body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,p,blockquote,th,td,textarea {
  margin:0;
  padding:0;
  font-size:14px;
  line-height:24px;
  color:#000;
  font-family:microsoft yahei,verdana,Tahoma
}
ol,ul,li {
  list-style:none;
  line-height:22px
}
ol,ul {
  zoom:1
}
h1,h2,h3,h4,h5,h6 {
  font-size:100%
}
img {
  border:none;
  max-width:100%
}
a,a:link,a:visited {
  cursor:pointer;
  text-decoration:none
}
a:hover {
  cursor:pointer
}
.table {
  border-collapse:collapse;
  border-spacing:0
}
.table td {
  border:solid 1px #666
}
.clear {
  clear:both;
  float:none;
  overflow:hidden;
  height:0;
  font-size:0
}
.clearFix:after {
  clear:both;
  display:block;
  visibility:hidden;
  height:0;
  line-height:0;
  content:"."
}
.clearFix {
  zoom:1
}
* {
  -webkit-box-sizing:border-box;
  -moz-box-sizing:border-box;
  box-sizing:border-box
}
:after,:before {
  -webkit-box-sizing:border-box;
  -moz-box-sizing:border-box;
  box-sizing:border-box
}
.font {
  font:14px/24px "Comic Sans MS"
}
:focus {
  outline:none
}
.css3pie {
  -webkit-border-radius:5px;
  -moz-border-radius:5px;
  border-radius:5px;
  behavior:url(css3pie/PIE.htc)
}
body {
  font-size:14px;
  font-family:黑体-简,黑体,微软雅黑,Arial,Gotham,helvetica neue,Helvetica,sans-serif;
  width:100%;
  margin:0 auto;
  background-color:#313131;
  overflow-x:hidden
}
.wrap {
  width:100%;
  height:1000px
}
.wrap p {
  font-size:48px;
  text-align:center;
  color:#fff;
  padding-top:280px;
  line-height:60px
}
.logo {
  text-align:center;
  vertical-align:middle;
  background:#357dd7;
  margin-left:45%;
  top:20%;
  z-index:11;
  width:240px;
  height:240px;
  overflow:hidden;
  position:relative
}
.logo:hover {
  box-shadow:0 0 10px #333
}
.logo h1 {
  display:table-cell;
  vertical-align:middle;
  width:240px;
  height:240px
}
.logo a {
  width:240px;
  height:240px;
  overflow:hidden
}
.logo a:before {
  content:'';
  position:absolute;
  left:-230%;
  top:0;
  width:200%;
  height:120%;
  background:#1f415f;
  z-index:1;
  transform:skew(30deg,0);
  -webkit-transform:skew(30deg,0);
  -ms-transform:skew(30deg,0);
  -moz-transform:skew(30deg,0);
  -o-transform:skew(30deg,0);
  transition:all .5s;
  -moz-transition:all .5s;
  -webkit-transition:all .5s;
  -o-transition:all .5s
}
.logo a:hover {
  background:#357dd7
}
.logo a:hover:before {
  left:-60px
}
.logo img {
  position:relative;
  z-index:1
}
.nav-main {
  position:fixed;
  top:0;
  z-index:12;
  height:100%;
  width:100px;
  color:#fff;
  background:#111213
}
.nav-main a {
  color:#fff
}
.nav-box {
  position:relative;
  perspective:200px;
  -webkit-perspective:200px;
  transform-style:preserve-3d;
  -webkit-transform-style:preserve-3d;
  height:100%;
  z-index:99
}
.nav-ul li a {
  display:block;
  width:100px;
  height:100px;
  overflow:hidden;
  text-align:center;
  position:relative;
  transition:all .5s;
  -moz-transition:all .5s;
  -webkit-transition:all .5s;
  -o-transition:all .5s
}
.nav-ul li a:before {
  content:'';
  position:absolute;
  left:-240px;
  top:0;
  width:200px;
  height:100%;
  background:#629feb;
  z-index:1;
  transform:skew(30deg,0);
  -webkit-transform:skew(30deg,0);
  -ms-transform:skew(30deg,0);
  -moz-transform:skew(30deg,0);
  -o-transform:skew(30deg,0);
  transition:all .5s;
  -moz-transition:all .5s;
  -webkit-transition:all .5s;
  -o-transition:all .5s
}
.nav-ul li a:hover {
  background:#357dd7
}
.nav-ul li a:hover:before {
  left:-30px
}
.nav-ul li a:after {
  content:'';
  position:absolute;
  width:100%;
  height:30px;
  left:0;
  top:20px;
  z-index:1
}
.nav-ul li a span {
  display:block;
  margin-top:60px;
  perspective:;
  position:relative;
  z-index:1
}
.nav-slide {
  position:fixed;
  left:100px;
  top:0;
  width:240px;
  height:100%;
  background:#252829;
  transform:rotateY(120deg);
  -webkit-transform:rotateY(120deg);
  -moz-transform:rotateY(120deg);
  -o-transform:rotateY(120deg);
  -ms-transform:rotateY(120deg);
  z-index:99;
  visibility:hidden;
  transform-origin:0 0;
  -webkit-transform-origin:0 0;
  -moz-transform-origin:0 0;
  -o-transform-origin:0 0;
  -ms-transform-origin:0 0;
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden;
  transition:all .5s;
  -webkit-transition:all .5s;
  -moz-transition:all .5s;
  -o-transition:all .5s;
  transition-timing-function:cubic-bezier(.08,.72,.71,.96);
  -webkit-transition-timing-function:cubic-bezier(.08,.72,.71,.96)
}
.nav-slide.hover {
  transform:rotateY(0deg);
  -webkit-transform:rotateY(0deg);
  -moz-transform:rotateY(0deg);
  -o-transform:rotateY(0deg);
  -ms-transform:rotateY(0deg);
  z-index:15;
  visibility:visible
}
.nav-slide-o li a {
  line-height:50px;
  display:block;
  padding:0 20px;
  font-size:14px;
  overflow:hidden;
  text-align:left;
  position:relative;
  transition:all .5s;
  -webkit-transition:all .5s;
  -moz-transition:all .5s;
  -o-transition:all .5s
}
.nav-slide-o li a:before {
  content:'';
  position:absolute;
  left:-230%;
  top:0;
  width:200%;
  height:100%;
  background:#629feb;
  z-index:1;
  transform:skew(30deg,0);
  -webkit-transform:skew(30deg,0);
  -moz-transform:skew(30deg,0);
  -o-transform:skew(30deg,0);
  -ms-transform:skew(30deg,0);
  transition:all .5s;
  -webkit-transition:all .5s;
  -moz-transition:all .5s;
  -o-transition:all .5s
}
.nav-slide-o li a:hover {
  background:#357dd7
}
.nav-slide-o li a:hover:before {
  left:-60px
}
.nav-slide-o li a span {
  position:relative;
  z-index:1
}
.nav-slide-o {
  display:none
}

script.js

$(function(){
    var thisTime;
    $('.nav-ul li').mouseleave(function(even){
            thisTime    =   setTimeout(thisMouseOut,1000);
    })

    $('.nav-ul li').mouseenter(function(){
        clearTimeout(thisTime);
        var thisUB  =   $('.nav-ul li').index($(this));
        if($.trim($('.nav-slide-o').eq(thisUB).html()) != "")
        {
            $('.nav-slide').addClass('hover');
            $('.nav-slide-o').hide();
            $('.nav-slide-o').eq(thisUB).show();
        }
        else{
            $('.nav-slide').removeClass('hover');
        }
        
    })
    
    function thisMouseOut(){
        $('.nav-slide').removeClass('hover');
    }
     
    $('.nav-slide').mouseenter(function(){
        clearTimeout(thisTime);
        $('.nav-slide').addClass('hover');
    })
    $('.nav-slide').mouseleave(function(){
        $('.nav-slide').removeClass('hover');
    })

})

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原文地址：https://www.cnblogs.com/chenyingying0/p/12850944.html