.b_sc3e0 .container {
    background: linear-gradient(to right, #f58233 50%, #9ac144 50%);
}
.b_sc3e0 #header {
    background-image: url("../images/banners/banner-level-0-2x.png");
}
.b_sc3e0 #headBtn li:hover {
    background: rgba(95, 119, 40, 0.6);
}
.b_sc3e0 #header > a:after {
    position: absolute;
    display: block;
    content: "";
    left: 100%;
    top: 0;
    height: 70px;
    background: url("../images/banners/logo-level-0-2x.png");
    background-size: 100%;
    width: 97px;
}
.b_sc3e0 #headBtn li:hover {
    background: rgba(95, 119, 40, 0.6);
}

.b_sc3e1 .container {
    background: linear-gradient(to right, #f58233 50%, #00a9cb 50%);
}
.b_sc3e1 #header {
    background-image: url("../images/banners/banner-level-1-2x.png");
}
.b_sc3e1 #header > a:after {
    position: absolute;
    display: block;
    content: "";
    left: 100%;
    top: 0;
    height: 70px;
    background: url("../images/banners/logo-level-1-2x.png");
    background-size: 100%;
    width: 23px;
}
.b_sc3e1 #headBtn li:hover {
    background: rgba(0, 84, 101, 0.6);
}

.b_sc3e2 .container {
    background: linear-gradient(to right, #f58233 50%, #d9394e 50%);
}
.b_sc3e2 #header {
    background-image: url("../images/banners/banner-level-2-2x.png");
}
.b_sc3e2 #header > a:after {
    position: absolute;
    display: block;
    content: "";
    left: 100%;
    top: 0;
    height: 70px;
    background: url("../images/banners/logo-level-2-2x.png");
    background-size: 100%;
    width: 23px;
}
.b_sc3e2 #headBtn li:hover {
    background: rgba(144, 28, 43, 0.6);
}

.b_sc3e3 .container {
    background: linear-gradient(to right, #f58233 50%, #8f499c 50%);
}
.b_sc3e3 #header {
    background-image: url("../images/banners/banner-level-3-2x.png");
}
.b_sc3e3 #header > a:after {
    position: absolute;
    display: block;
    content: "";
    left: 100%;
    top: 0;
    height: 70px;
    background: url("../images/banners/logo-level-3-2x.png");
    background-size: 100%;
    width: 23px;
}
.b_sc3e3 #headBtn li:hover {
    background: rgba(79, 40, 87, 0.6);
}

.b_sc3e0 #header > a:hover,
.b_sc3e1 #header > a:hover,
.b_sc3e2 #header > a:hover,
.b_sc3e3 #header > a:hover {
    background-position: 0 0;
}
.b_sc3e0 #header > a,
.b_sc3e1 #header > a, 
.b_sc3e2 #header > a, 
.b_sc3e3 #header > a {
    cursor: pointer;
    transition: background-position 0.2s;
}