body{
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    background: url('/images/bg-moring.jpg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}
.login{
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    background: rgba(0,0,0,0.5);
    text-align: center;
    color: #fff;
    font-family: "微软正黑体", sans-serif;
    border-radius: 10px;
    padding: 30px;
    width: 25%;
}
.login i {
    font-size: 100px;
    margin: 20px auto;
}
input[type="text"], input[type="password"]{
    font-size: 16px;
    font-family: "微软正黑体", sans-serif;
    padding: 5px;
    margin: 0 auto;
    display: block;
    width: 100%;
    border-radius: 10rem;
}
button{
    border-radius: 10rem;
    width: 100%;
    border: 0px;
    padding: 6px 12px;
    margin:20px auto;
    font-size: 18px;
    font-family: "微软正黑体", sans-serif;
    background-color: #64a19d;
    color: rgb(255, 255, 255);
    box-shadow: 0 0.1875rem 0.1875rem 0 rgb(0 0 0 / 10%) ;
}
button:hover {
    background-color: #71b6b1; /* Green */
    color: white;
}
@media(max-width: 450px){
    .login{
        width: 70%;
    }
}
.alert-danger{
    padding-top: 1rem;
    color: #ff8d00;
}