zh_wx/pages/login/login.wxss

/* pages/login/login.wxss */
.btn{
  height: 200rpx;
  border:5rpx solid black
}
.container {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 150rpx 0 100rpx 0;
  box-sizing: border-box;
} 
.userinfo {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #aaa;
}

.userinfo-avatar {
  overflow: hidden;
  width: 128rpx;
  height: 128rpx;
  margin: 20rpx;
  border-radius: 50%;
}
.van-cell{
  background-color: transparent !important;
  height: 120rpx;
  align-items: center;
}
.van-cell__title{
  color: white;
}

.usermotto {
  margin-top: 200px;
}
.bdy{
  position: absolute;
  top: 450rpx;
  width: 100%;
}
.border{
  height: 100vh;
  width: 100%;
  background-color: black;
}
.btn{
  position: absolute;
  top: 70%;
  left: 50%;
  transform: translate(-50%,0);
  background-color: red;
  line-height: 90rpx;
  height: 100rpx;
  width: 300rpx;
}
.container{
  background-image:url('https://zh.qingyaokeji.com/logo.png');
  width: 220rpx;
  height: 220rpx;
  background-repeat: no-repeat;
  position: absolute;
  top: 12%;
  left: 50%;
  transform: translate(-50%,0);
  background-size: contain;
  z-index: 2;
}
.van-field__input{
  color: white !important;
}