/*首页*/
.container{
  max-width: 640px;
  margin: 0 auto;
  height: 100%;
  background:url(../images/bg.jpg) no-repeat #fff center top;
  background-size:cover;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  position:relative;
}
.container .box{
    width:80%;
    height:80%;
    left:50%;
    bottom:100px;
    transform:translatex(-50%);
    position:absolute;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.container .box img{
    max-width:100%;
    display:block;
}
.container .box .logo{
    width:80%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container .box .by{
    width:70%;
    margin-top:30px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container .box .btns{
    width:80%;
    margin-top:40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: column;
}
.container .box .btns a{
    width:100%;
    margin-top:10px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:30px;
    height:42px;
    border:2px #fff solid;
    color:#fff;
}
.container .box .btns a:nth-child(2){
    background:#fff;
    color:#009b4d;
}