*{
  margin:0;
  padding:0;
  list-style:none;
    font-family: 'Helvetica';
    font-family: 'Pingfang SC';
    font-family: 'Microsoft YaHei';
    font-family: 'WenQuanYi Micro Hei';
    font-family: 'sans-serif';
    font-family: 'Hiragino Sans GB';
}
html,
body,
#app {
  height: 100vh;
  font-family: "Avenir", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  background: #326fea;
  
}
.top {
  height: 50px;
  background: #ddd;
  width: 100%;
}
.container{
  /* background: red; */
  width:100%;
  position: fixed;
  top:calc(50% - 200px);
}
.container img{min-width:344px;}
.bottom {
  position: fixed;
  bottom: 0;
  width: 100%;
  left: 0;
  height: 50px;
  line-height: 50px;
  text-align: center;
  color:white;
}
.bottom a{
  color:white;
}