* {
    margin: 0;
    padding: 0;
    font-family: "Microsoft YaHei";
}
html {
    height: 100%;
    overflow: hidden;
}
body {
    width: 100%;
    height: 100%;
    font-size: 16px;
    background: url(login_bg.jpg) no-repeat;
    background-size: 100% 100%;
    -moz-user-select: none;
    -webkit-user-select: none; 
    -ms-user-select: none; 
    -khtml-user-select: none;
    user-select: none;
}
@media (max-min: 1500px) {
    body {
        background: url(login_bg@2x.jpg) no-repeat;
    }
}
.tdxk {
    position: absolute;
    top: 30px;
    left: 30px;
    max-width: 100px;
}
.login_form {
    width: 800px;
    height: 500px;
    position: absolute;
    top: 50%;
    margin-top: -250px;
    left: 50%;
    margin-left: -400px;
}
#center{
    margin: 0 auto;
    text-align: center;
}
img.logo{
    max-width: 350px;
    margin-top: 20px;
}
.input-wrap {
    width: 350px;
    height: 50px;
    background: #fff;
    color: #666;
    margin: 0 auto;
    border-left: 1px solid #ddd;
    border-right: 1px solid #ddd;
}
.input-wrap.name{
    border-top: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    margin-top: 20px;
}
.input-wrap.password{
    border-bottom: 1px solid #ddd;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
}
.input-wrap input{
    border: none;
    padding: 10px;
    width: 200px;
    height: 30px;
    line-height: 30px;
    outline:none;
    font-size: 16px;
}
.input-wrap label{
    width: 70px;
    text-align: right;
    display: inline-block;
}
.login_btn{
    margin-top: 30px;
    border: 1px solid #ddd;
    height: 50px;
    line-height: 50px;
    border-radius: 10px;
    text-align: center;
    background: #fff;
    width: 350px;
    color: #666;
    font-size: 15px;
    outline:none;
    cursor: pointer;
}