* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.container {
  position: absolute;
  left: 25%;
  top: 25%;
  width: 50%;
  height: 100vh;
  background-color: white;
}

.user-info {
  display: flex;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid #ccc;
}

.user-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-right: 20px;
}

.user-id {
  font-size: 24px;
  font-weight: bold;
}

.user-signature {
  font-size: 16px;
  color: #666;
}

.user-list {
  list-style: none;
}

.user-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  border-bottom: 1px solid #ccc;
}

.user-list-item-label {
  font-size: 18px;
}

.user-list-item-value {
  font-size: 18px;
  color: #333;
}

.user-list-item-icon {
  width: 20px;
  height: 20px;
  margin-left: 10px;
}

.user-list-item-dropdown {
  display: none;
  background: white;
  width: 200px;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.user-list-item-dropdown-input {
  width: calc(100% - 20px);
  margin: 10px auto;
  padding-left: 10px;
  border-radius: 5px;
  border: none;
}

.user-list-item-dropdown-button {
  width: calc(100% - 40px);
  margin-left: auto;
  margin-right:auto;
 margin-bottom :10px ;
 padding :10px ;
 background-color :#2196f3 ;
 color :white ;
 border-radius :5px ;
 border :none ;
 cursor :pointer ;
}
 .return_btn{
   position: absolute;
   left: 80%;
   top: 55%;
    width: 6%;
   height: 5%;
    margin-left: auto;
    margin-right:auto;
    margin-bottom :10px ;
   box-shadow: 0 0 10px #66aee6;
   border: solid 1px #66aee6;
   border-radius: 40%;
   text-align: center;
   font-size: 20px;
   font-weight: bolder;
   background-color: #66aee6;
   font-family: "Microsoft YaHei";
   color: snow;
   transition: all 1s;
   cursor: pointer;
 }
  .return_btn:hover{
    background-color: snow;
    color: #66aee6;
    box-shadow: 0 0 10px darkgray;
    border: solid 1px #arkgray;
  }