.settings-btn {
            top:0;

           box-shadow: 0 0 0.2rem rgba(16, 15, 15, 0.5);
            height: 2rem;
         width: 3.2rem;
         flex-grow: 0;
            padding: 0px!important;
            background-color: white;
            border: none;
            color: white;
            margin-left: 0.8rem;
            text-align: center!important;
            text-decoration: none;
            display: inline-block;
            font-size: 1rem;

            cursor: pointer;
            border-radius: 1.2rem;
        }

 .language-a:hover{
      background-color: #f2f2f2;
 }

.header-button-btn:hover {
  background-color: #f2f2f2;
}
.sendcode:hover{
    background-color: #ff9999!important;
}
.login-button-btn:hover {
  background-color: #f2f2f2;
}
.login-button-btn:focus{

    outline: none;
}

.settings-btn:hover {
  background-color: #dddddd;
}
    #sendButton:hover {
    background-color: #e18787;
  }

     #submit-button:hover {
    background-color: #ff9999;
  }
/*    .settings-popup {*/
/*    position: fixed;*/
/*    top: 50%;*/
/*    left: 50%;*/
/*    transform: translate(-50%, -50%);*/
/*    width: 70%;*/
/*    max-width: 500px;*/
/*    background-color: #e7eaf3;*/
/*    padding: 20px;*/
/*    border-radius: 3%;*/
/*    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);*/
/*    display: none;*/
/*    flex-direction: column;*/
/*    align-items: center;*/
/*}*/




        .tab {
            margin-bottom: 20px;
        }

        /*h3 {*/
        /*    margin-top: 0;*/
        /*}*/

        .close-btn {
            position: absolute;
            top: 5px;
            right: 5px;
            font-size: 18px;
            cursor: pointer;
        }

        .char-counter {
            margin-top: 10px;
        }

        .reference-input {
            margin-bottom: 10px;
            margin-right: 10px;
        }
        .title {
            margin-bottom: 10px;
            font-weight: bold;
               font-family: "Arial", sans-serif;
             line-height: 1.2;
  position: relative; /* 将标题设置为相对定位 */
}