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var appButton = document.getElementById('appid');
var appCon = document.getElementById('appContain');
var appDom1 = appCon.getElementsByClassName("uds-app-content")[0];
var appDom2 = appCon.getElementsByClassName("uds-app-content")[1];
var appDom3 = appCon.getElementsByClassName("uds-app-content")[2];
var mimaTimeDom = appDom2.getElementsByClassName("app-body-title")[0].getElementsByTagName("SPAN")[0];
var mimaDom = appDom2.getElementsByClassName("app-body-mima")[0];
var mimaOperDom = appDom2.getElementsByClassName("app-body-oper")[0];
var saomaDom = appDom2.getElementsByClassName("app-foot-saoma")[0].getElementsByClassName("app-foot-sao1")[0];
var closeDom = appDom2.getElementsByClassName("uds-app-head")[0].getElementsByClassName("close")[0];
var backDom = appDom3.getElementsByClassName("uds-app-head")[0].getElementsByClassName("backTo")[0];
var time = 60;
var kouling = '782630';
appButton.addEventListener("click",function() {
  if(appButton.classList.contains('text-show')) {
    appButton.classList.remove('text-show');
  }
  appCon.classList.add('showApp');
  setTimeout(() => {
    appDom1.classList.remove('app-content-show');
    appDom2.classList.add('app-content-show');
    daojishi();
  },1000);
});
closeDom.addEventListener("click",function() {
  appCon.classList.remove('showApp');
});
mimaOperDom.addEventListener("click",function() {
  time = 60;
  mimaTimeDom.innerHTML = --time;
  updateMima();
});
backDom.addEventListener("click",function() {
  appDom3.classList.remove('app-content-show');
  setTimeout(() => {
    appDom2.classList.add('app-content-show');
  },100);
});
saomaDom.addEventListener("click",function() {
  appDom2.classList.remove('app-content-show');
  setTimeout(() => {
    appDom3.classList.add('app-content-show');
  },100);
});
function daojishi() {
  mimaTimeDom.innerHTML = --time;
  if(time === 0) {
    time = 60;
    updateMima();
  }
  setTimeout(() => {daojishi();}, 1000);
}
function updateMima() {
  kouling = '';
  for(var i=0;i < 6;i++) {
    kouling += Math.floor(10*Math.random());
  }
  mimaDom.innerHTML = kouling;
}

setTimeout(() => {
  appButton.classList.add('text-show');
},500);
<link href="//netdna.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">

<div class="uds-app" id="appid">
  <div class="uds-icon">
    <div class="uds-icon-item"></div>
    <div class="uds-icon-item"></div>
  </div>
  <span class="text">点我</span>
</div>
<div class="uds-app-container" id="appContain">
  <div class="uds-app-content app-content-show">
    <div class="uds-app-body">
      <div class="uds-icon">
        <div class="uds-icon-item"></div>
        <div class="uds-icon-item"></div>
      </div>
      <div class="app-body-title">
        轻轻一<span></span>轻松搞定
      </div>
    </div>
    <div class="uds-app-foot">
      <span>c</span>
      <span>2014-2017 中兴通讯股份有限公司</span>
    </div>
  </div>
  <div class="uds-app-content">
    <div class="uds-app-head">
      <span>关于我们</span>
      <span class="close">退出</span>
    </div>
    <div class="uds-app-body">
      <div class="app-body-head">
        当前口令
      </div>
      <div class="app-body-mima">
        783630
      </div>
      <div class="app-body-title">
        当前口令<span>40</span>秒后失效
      </div>
      <div class="app-body-oper">
        <span class="fa fa-rotate-right"></span>口令刷新
      </div>
    </div>
    <div class="uds-app-foot">
      <div class="app-foot-saoma">
        <div class="app-foot-sao1">
          <span></span>
          <span></span>
          <span></span>
          <span></span>
          <span></span>
          <span>扫一扫</span>
        </div>
      </div>
    </div>
  </div>
  <div class="uds-app-content app-saomiao">
    <div class="uds-app-head">
      <span class="backTo">
        <span class="fa fa-angle-left"></span>
        返回
      </span>
      <span>扫描二维码</span>
    </div>
    <div class="uds-app-body">
      <div class="app-body-saoma">
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
      </div>
    </div>
  </div>
  
</div>
.uds-app {
  height:60px;
  width:60px;
  background: #fff;
  border:solid 1px #d9d9d9;
  border-radius:12px;
  display:flex;
  justify-content:center;
  align-items: center;
  margin: 50px;
  transition:transform 50ms;
  position:relative;
}
.uds-app:hover {
  cursor: pointer;
  box-shadow: 2px 2px 2px 5px #f2f2f2;
  transform: translateX(1px) translateY(1px);
}
.uds-app .text {
  position:absolute;
  color:#666;
  left:115%;
  bottom:10px;
  display:inline-block;
  padding: 10px;
  font-size:12px;
  background-color:#ffffcc;
  border-radius:6px;
  width:30px;
  opacity:0;
  transition:opacity 500ms;
}
.uds-app .text:before {
  content:"";
  position:absolute;
  right:100%;
  bottom:6px;
  display:inline-block;
  border:solid 8px #ffffcc;
  border-color: transparent #ffffcc transparent transparent;
}
.uds-app.text-show span.text {
   opacity:1;
}
.uds-icon {
  height: 85%;
  width: 66%;
  position: relative;
}
.uds-icon:after {
  display:inline-block;
  width:100%;
  content: "ZTE";
  color: #fff;
  font-size:16px;
  font-weight:500;
  position: absolute;
  top:30%;
  left:0;
  text-align:center;
}
.uds-icon .uds-icon-item {
  display:inline-block;
  width:50%;
  height:100%;
  background: #3385ff;
  box-sizing:border-box;
  float:left;
  position: relative;
  transform:none;
}
.uds-icon .uds-icon-item:first-child {
  border-right: solid 0.5px #1a75ff;
  border-radius: 0 0 0 100% / 0 0 0 70%;
}
.uds-icon .uds-icon-item:first-child:after {
  content:"";
  display:inline-block;
  width:100%;
  height:15%;
  background: #fff;
  border-radius: 0 0 100% 0 / 0 0 100% 0;
  position:absolute;
  top:-1px;
}
.uds-icon .uds-icon-item:last-child {
  border-left: solid 0.5px #1a75ff;
  border-radius: 0 0 100% 0 / 0 0 70% 0;
}
.uds-icon .uds-icon-item:last-child:after {
  content:"";
  display:inline-block;
  width:100%;
  height:15%;
  background: #fff;
  border-radius: 0 0 0 100%;
  position:absolute;
  top:-1px;
}

.uds-app-container {
  height: 400px;
  width:260px;
  border:solid 1px #e6e6e6;
  border-radius: 8px;
  margin-left:200px;
  overflow:hidden;
  box-shadow: 2px 2px 2px 3px #f2f2f2;
  opacity:0;
  transition: opacity 500ms linear;
  position:relative;
}
.uds-app-container.showApp {
  opacity:1;
}
.uds-app-content {
  height:inherit;
  width:inherit;
  display:flex;
  justify-content:center;
  align-items:center;
  position:absolute;
  opacity:0;
  z-index:0;
  transition:all 800ms linear;
}
.uds-app-content:first-child {
  background:#f2f2f2;
}
.uds-app-content:nth-child(2) {
  background:#fff;
}
.uds-app-content.app-content-show {
  opacity:1;
  z-index:1;
}
.uds-app-content .uds-app-body {
  z-index:1;
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  align-items: center;
  margin-top:-30px;
  color:#666;
}
.uds-app-content .uds-app-body .uds-icon {
  height: 70px;
  width: 52px;
}
.uds-app-content .uds-app-body .app-body-title {
  font-size:14px;
  color:#666;
  margin-top: 15px;
}
.uds-app-content .uds-app-body .app-body-title span {
  font-size:18px;
  color: #0066ff;
  margin-right:10px;
}
.uds-app-content .uds-app-body .app-body-head {
  font-size:16px;
  margin-bottom:10px;
}
.uds-app-content.app-saomiao .uds-app-head {
  display:flex;
  justify-content:center;
  z-index: 5;
  background:#f2f2f2;
}
.uds-app-content.app-saomiao .uds-app-head > span:first-child {
  position:absolute;
  left:20px;
}
.uds-app-content.app-saomiao .uds-app-head > span:first-child:hover .fa {
  color:#666;
}
.uds-app-content.app-saomiao .uds-app-head > span:last-child {
  font-size:14px;
  color:#666;
}
.uds-app-content.app-saomiao .uds-app-body {
  width:100%;
  height:100%;
  background:#a6a6a6;
  margin-top:0;
}
.uds-app-content.app-saomiao .app-body-saoma {
  width:180px;
  height:180px;
  background:#f2f2f2;
  position:relative;
}
.uds-app-content.app-saomiao .app-body-saoma > span {
  display:inline-block;
  height: 24px;
  width: 24px;
  position:absolute;
}
.uds-app-content.app-saomiao .app-body-saoma > span:first-child {
  top:0;
  left:0;
  border:none;
  border-top:solid 2px #4db8ff;
  border-left:solid 2px #4db8ff;
}
.uds-app-content.app-saomiao .app-body-saoma > span:nth-child(2) {
  top:0;
  right:0;
  border:none;
  border-top:solid 2px #4db8ff;
  border-right:solid 2px #4db8ff;
}
.uds-app-content.app-saomiao .app-body-saoma > span:nth-child(3) {
  bottom:0;
  right:0;
  border:none;
  border-bottom:solid 2px #4db8ff;
  border-right:solid 2px #4db8ff;
}
.uds-app-content.app-saomiao .app-body-saoma > span:nth-child(4) {
  bottom:0;
  left:0;
  border:none;
  border-bottom:solid 2px #4db8ff;
  border-left:solid 2px #4db8ff;
}
.uds-app-content.app-saomiao .app-body-saoma > span:nth-child(5) {
  display:inline-block;
  height: 2px;
  width: 90%;
  top:0;
  left:7px;
  border-radius: 1px;
  background-color:#4db8ff;
  animation: amanionSaoma 6s infinite alternate linear;
}
@keyframes amanionSaoma
{
  0%   {top:3%;}
  10%   {top:10%;}
  20%   {top:20%;}
  30%   {top:30%;}
  40%   {top:40%;}
  50%   {top:50%;}
  60%   {top:60%;}
  70%   {top:70%;}
  80%   {top:80%;}
  90%   {top:90%;}
  100%  {top:97%;}
}

.uds-app-content .uds-app-body .app-body-mima {
  font-size:18px;
  color: #ff4d94;
  padding:10px 60px;
  background:#e6e6e6;
  border-radius:19px;
}
.uds-app-content .uds-app-body .app-body-title {
  font-size:12px;
  color: #999999;
}
.uds-app-content .uds-app-body .app-body-title span {
  font-size:12px;
  font-weight:400;
  color: #3399ff;
  margin: 0 3px;
}
.uds-app-content .uds-app-body .app-body-oper {
  font-size:12px;
  color: #999999;
  margin-top:8px;
  color: #3399ff;
  cursor:pointer;
}
.uds-app-content .uds-app-body .app-body-oper span {
  margin-right:5px;
}

.uds-app-content .uds-app-foot {
  width:inherit;
  font-size:12px;
  color:#666;
  display:flex;
  align-items:center;
  justify-content:center;
  position:absolute;
  bottom: 10px;
  left:0;
}
.uds-app-content .uds-app-foot span:first-child {
  display:inline-block;
  height:12px;
  width:12px;
  border-radius:50%;
  border:solid 1px #b3b3b3;
  line-height:12px;
  text-align:center;
}
.uds-app-content .uds-app-foot .app-foot-saoma {
  width:inherit;
  height:120px;
  background:#3399ff;
  display:flex;
  justify-content:center;
  align-items:center;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 {
  display:inline-block;
  height: 56px;
  width: 56px;
  position:relative;
  cursor:pointer;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:not(:last-child) {
  display:inline-block;
  height: 18px;
  width: 18px;
  border:none;
  position:absolute;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:first-child {
  top:0;
  left:0;
  border:none;
  border-top:solid 2px #fff;
  border-left:solid 2px #fff;
  border-radius: 10px 0 0 0;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:nth-child(2) {
  top:0;
  right:0;
  border-top:solid 2px #fff;
  border-right:solid 2px #fff;
  border-radius: 0 10px 0 0;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:nth-child(3) {
  bottom:0;
  right:0;
  border-right:solid 2px #fff;
  border-bottom:solid 2px #fff;
  border-radius: 0 0 10px 0;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:nth-child(4) {
  bottom:0;
  left:0;
  border-left:solid 2px #fff;
  border-bottom:solid 2px #fff;
  border-radius: 0 0 0 10px;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:nth-child(5) {
  display:inline-block;
  height: 2px;
  width: 100%;
  position:absolute;
  top:50%;
  left:0;
  border-radius: 1px;
  background-color:#fff;
}
.uds-app-foot .app-foot-saoma .app-foot-sao1 > span:last-child {
  display:inline-block;
  font-size:12px;
  color:#fff;
  width: 100%;
  text-align:center;
  position:absolute;
  bottom:-18px;
}

.uds-app-content .uds-app-head {
  padding:5px 10px;
  border-bottom:solid 1px #e6e6e6;
  width:inherit;
  position:absolute;
  left:0;
  top: 0;
  display:flex;
  justify-content:space-between;
  box-sizing:border-box;
}
.uds-app-content .uds-app-head span {
  font-size:12px;
  color:#999;
  cursor:pointer;
}
.uds-app-content .uds-app-head span:hover {
  color:#595959;
}
.uds-app-content .uds-app-head span:last-child {
  font-size:12px;
  color:#999;
  cursor:pointer;
}