html,body{
    height: 100%;
    overflow: hidden;
}
body{
    background: url("imaegs/bg.webp") no-repeat 0 0;
    background-size: 100% 100%;
}

.main-container{

    position: absolute;
    top:50%;
    left: 50%;
    margin-left: -352px;
    margin-top: -325px;
    text-align: center;

}

.main-container form{
    background: url("imaegs/block.png") no-repeat 0 0;
    width:704px ;
    height:456px;
    padding-top: 94px;
    box-sizing: border-box;
}
.username,.password{
    width: 400px;
    height: 64px;
    background: rgba(255,255,255,0.20);
    border: 1px solid rgba(16,191,245,0.40);
    border-radius: 4px;
    padding-left: 60px;
    box-sizing: border-box;
    margin: 0px auto;
    position: relative;
}
input:-internal-autofill-selected{
    background: none;
}
.username:before,.password:before{
    content: "";
    display: inline-block;
    width: 30px;
    height: 30px;
    background: url("imaegs/zh.png") no-repeat 0 0;
    background-size: 100% 100%;
    position: absolute;
    top:50%;
    left: 14px;
    margin-top: -15px;

}
input:focus{
    outline:none;
}
.password:before{
    background: url("imaegs/mm.png") no-repeat 0 0;
}
.password{
    margin-top: 16px;
}
input[type="password"],input[type="text"]{
    height: 100%;
    width: 100%;
    border: none;
    padding: 0 ;
    color: #fff;
    background: none;
    outline:none;
    font-size: 24px;
}
.submit-btn{
    width: 400px;
    height: 64px;
    background: #10bff5;
    border-radius: 4px;
    margin: 36px auto 0 auto;
    color: #fff;
    font-size: 24px;
    text-align: center;
    border: none;
    outline: none;
}
h1{
    font-size: 40px;
    font-weight: 500;
    color: #fff;
}
i{
    font-size: 24px;
    color: #fff;
}
.footer{
    position: fixed;
    text-align: center;
    opacity: .6;
    color: #fff;
    font-size: 20px;
    width: 100%;
    left: 0;
    bottom: 10px;
}
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-transition-delay: 111111s;
    -webkit-transition: color 11111s ease-out, background-color 111111s ease-out;
}
.alert-danger{
    color: red;
    text-align: center;
    margin-top: 10px;
}