.login-main {
    background: url(../images/bg.jpg) no-repeat center;
    height: 100vh;
}

.login-main .center {
    width: 80%;
    height: 80%;
    background: #fff;
    border-radius: 10px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 30px rgba(0, 0, 0, .3);
    /*考虑浏览器兼容性*/
    -moz-box-shadow: 0 0 30px rgba(0, 0, 0, .3);
    -webkit-box-shadow: 0 0 30px rgba(0, 0, 0, .3);
}

.login-main .center .leftimg {
    width: 50%;
    height: 100%;
    background: url(../images/img.jpg) no-repeat center;
    background-size: 100% 100%;
}

.user-section {
    background: #ffffff;
    min-height: 510px;
    width: 40%;
    border-radius: 15px;
    position: absolute;
    right: 4%;
    top: 10%;
}

.user-section .top {
    text-align: center;
}

.user-section .top .bt {
    font-size: 46px;
    color: #3e83e9;
    margin-bottom: 16px;
}

.user-section .top .en {
    font-size: 16px;
    color: #999999;
    text-transform: uppercase;
}

.form-vertical {
    margin-top: 20px;
}

.form-input {
    width: 100%;
    height: 5vh;
    background: #f7f7f7;
    border-radius: 50px;
    text-indent: 2em;
    font-size: 16px;
    margin-bottom: 3%;
}

.yzm input {
    width: 100%;
    height: 5vh;
    background: #f7f7f7;
    border-radius: 50px;
    text-indent: 2em;
    font-size: 16px;
    margin-bottom: 3%;
}

.controls {
    font-size: 16px;
    color: #999999;
    margin-bottom: 30px;
}

.btn {
    font-size: 20px;
    height: 5vh;
    width: 50%;
    border-radius: 50px;
    background: #3e83e9;
    color: #ffffff;
    cursor: pointer;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgb(171, 205, 255);
    /*考虑浏览器兼容性*/
    -moz-box-shadow: 0 8px 20px rgb(171, 205, 255);
    -webkit-box-shadow: 0 8px 20px rgb(171, 205, 255);
}

.form-group {
    text-align: center;
}

.btn-lg {
    color: #3e83e9;
    font-size: 16px;
    display: block;
}

.loginav {
    width: 100%;
    margin: 0 auto;
    line-height: 80px;
    color: #3083ed;
    position: absolute;
    z-index: 99;
}

.loginav .left {
    margin-left: 30px;
    margin-top: 30px;
}

.loginav a {
    font-size: 16px;
    color: #666666;
    display: block;
    float: left;
    width: 20%;
    text-align: center;
}

.loginav .right {
    margin-right: 30px;
    width: 44%;
}

.loginav .right a:hover {
    color: #3083ed;
}

.login-main .bottom {
    position: absolute;
    width: 100%;
    bottom: 4%;
    color: #ffffff;
    font-size: 16px;
    text-align: center;
}