html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    position: relative;
}

body {
    background: url(../img/uc-bg.png) no-repeat;
    background-size: 100% 100%;
}

.bg {
    height: 100%;
    width: 100%;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: url(../img/uc-bg.png) no-repeat;
    background-size: 100% 100%;
}

#login {
    position: relative;
    height: 276px;
    background: transparent;
    padding-top: 100px;
}

.header {
    height: 45px;
    line-height: 45px;
    background: #fff;
    overflow: hidden;
    padding: 5px 30px;
}

.header a {
    color: #4b566b;
    font-size: 15px;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

#common-login {
    position: absolute;
    margin-left: 50%;
    left: -160px;
}