.login_from .container{
    height: 320px;
    width: 420px;
    position: absolute;
    margin: auto;
    right: 0;
    left: 780px;
    bottom: 0;
    top:100px;
    z-index: 100;
    background: #FFF;
    border-radius: 10px;
    box-shadow: 0 3px 18px rgba(151, 151, 151, 0.5);
    padding: 20px;
    font-size: 16px;
}
.login_from .container h2{
    text-align: center;
}
.login_from .container input{
    width:350px;
    height: 50px;
    border-radius: 5px;
}
.login_from .layui-form-item{
    margin-left: -70px;
    margin-top: 30px;
    margin-bottom: 15px;
}
.login_from .layui-btn{
    width:350px;
    border-radius: 5px;
    font-size: 16px;
}

body{
    background: url('../images/登录界面.png') no-repeat;
}



.layui-font-black{
    height: 50px;
    width: 270px;
    margin: 0 auto;
    background: url('../images/logo.png') no-repeat;
}
.layui-btn{
    background: linear-gradient(45deg, #70dbc8, #5fbede);
}

@media screen and (max-width: 768px) {
    body {
        background: none;
    }

        .login_from .container{
            left: 0;
            top: 0;
            zoom: 0.8;
        }
}