html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {

    font-family: 'Montserrat', sans-serif;
    line-height: 1.3;
    -webkit-font-smoothing: antialiased;
}

#bg {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.video_mask {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 90;
}

.login {
    height: 260px;
    width: 260px;
    padding: 20px;
    /* background-color: rgba(0, 0, 0, 0.5); */
    border-radius: 4px;
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -150px 0 0 -150px;
    z-index: 99;
}

.login h1 {
    text-align: center;
    color: #fff;
    font-size: 24px;
    margin-bottom: 20px;
}

.form_code {
    position: relative;
}

.form_code .code {
    position: absolute;
    right: 0;
    top: 1px;
    cursor: pointer;
}

.login_btn {
    width: 100%;
}