@import url("https://fonts.googleapis.com/css?family=Orbitron");

body {
    font-family: "Orbitron";
}

/* wrap */

#wrap {
    width: 100%;
    height: 100%;
    position: absolute;

    background-color: #333;
    display: flex;
}

/* header */

#header {
    width: 350px;
    height: 100%;
    color: white;

    display: flex;
    flex-direction: column;
    justify-content: space-between;

    padding: 80px 0px 80px 140px;
    box-sizing: border-box;
    font-size: 13px;
}

#header i {
    font-size: 150px;
}

#header em {
    display: block;
    margin-top: 18px;
    font-size: 21px;
}

/* contents */

#contents {
    width: 100%;
    height: 100%;

    position: relative;
    padding: 80px 60px;
    box-sizing: border-box;

    display: flex;
    flex-direction: column;
}

.nav {
    display: flex;
    justify-content: flex-end;
    width: 100%;
    height: 150px;
    font-size: 25px;
    padding-right: 110px;
    box-sizing: border-box;
}

.nav li {
    margin-left: 40px;
    color: #999;
}

/* real contents */

#contents-content {
    width: 100%;
    height: 100%;

    display: flex;
    justify-content: end;
}

.section {
    width: 23%;
    height: 100%;
    margin-left: 50px;

    padding-top: 200px;
    padding-left: 110px;
    box-sizing: border-box;
    opacity: 0.3;
    cursor: pointer;
    position: relative;

    overflow: hidden;
    z-index: 2;
    color: black;
}

.section h2 {
    font-size: 30px;
    position: relative;
    margin-bottom: 90px;
    color: black;
}

.section h2::after {
    content: " ";
    position: absolute;
    width: 40px;
    height: 2px;
    left: 0;
    top: 50px;

    background-color: #999;
}

.section video {
    position: absolute;
    bottom: 0;
    width: 90%;
    z-index: 5;
}

/* 10% 33%  54% 75% */

.section-wrap {
    position: absolute;
    width: 400px;
    height: 100%;
    left: -10%;
    top: 0;

    background-color: #888;
    z-index: 1;
    opacity: 0;
}

.full-wrap {
    position: absolute;
    width: 100%;
    height: 100%;
    left: -5000px;
    top: 0;

    background-color: #222;
    opacity: 1;
    transition: 1s;
}

.full-wrap.on {
    opacity: 1;
    z-index: 10;
    left: 0px;
}

.full-wrap h2 {
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
    color: yellow;
    cursor: pointer;
}

.full-wrap video {
    position: absolute;
    width: 80%;
    right: 3%;
    top: 50%;
    transform: translateY(-50%);
}