*{
    padding: 0;
    margin: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
   
 }


 body{
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background:linear-gradient(125deg,
    #1c2731,#27ae60,#2980b9,#d36b5e,#855a97);
    background-size: 500%;
    animation: beAnimation 15s linear infinite;

 }



 .main-wrapper{
    width: 420px;
    height: 280px;
    padding: 20px 40px;
    box-sizing: border-box;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
 }

 h3{
     text-align: center;
     font-size: 20px;
     margin-bottom: 30px;

 }

 .login-item{
   height: 36px;
   display: flex;
   align-items: center;
 }

.login-span{
    font-size: 14px;
    height: 100%;
    line-height: 36px;
    margin-right: 20px;
    letter-spacing: 8px;
}

 .login-input{
     outline-style: none;
     height: 100%;
     flex: 1;
     box-sizing: border-box;
     padding: 0 8px;
     border: 1px solid #ddd;
     caret-color: #ddd;
     border-radius: 4px;
     font-size: 14px;
 }


 input::-webkit-input-placeholder{
   color: #999;
   font-size: 12px;

 }

 input::placeholder{
    color: #999;
    font-size: 12px;

 }
 input::-moz-placeholder{
    color: #999;
    font-size: 12px;

 }



 .last-item{
     margin-top: 20px;
 }


 button{
     margin-top: 30px;
     width: 100%;
     height: 44px;
     outline: none;    
     cursor: pointer;
     border-radius: 4px;
     background-color: #51a3ff;
     color: #fff;
 }


 #toast{
    position: absolute;
    display: none;
    left: 50%;
    top: 10%;
    z-index: 9999;
    margin: auto;
    padding: 16px 8px;
    transform: translate(-50%,-50%);
    min-width: 120px;
    min-height: 25px;
    line-height: 25px;
    border-radius: 5px;
    text-align: center;
    color: #ff6f00;
    background-color: rgba(0,0,0,0.5);
}

 @keyframes beAnimation {
     0%{
         background-position: 0% 50%;
     }

     50%{
        background-position: 100% 50%;
    }

    100%{
        background-position: 0% 50%;
    }
 }