html,
body {
    height: 100%;
    width: 100%;

    margin: 0;
    padding: 0;

    background-color: #f9fafa;
    color: #20303c;

    font-family: Madefor, Helvetica Neue, Helvetica, Arial, メイリオ, meiryo, ヒラギノ角ゴ pro w3, hiragino kaku gothic pro, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;

    overflow-x: hidden;
    overflow-y: hidden;
}

.container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;

    background: url(../img/background.jpg) center no-repeat;
    background-size: cover;
}

header {
    height: 9vh;
    width: 98vw;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 1.2em;

    margin: 1vh 1vw;

    padding: 1vh 0 1vh 0;

    display: flex;
    align-items: center;
}

header .logoContainer .logoIcon {
    width: 200px;
    height: auto;
    margin: auto 3vw;

    display: flex;
    align-items: center;
}

header .title {
    font-weight: 600;
    font-style: italic;
    font-size: 40px;

    color: rgba(60, 60, 60, 0.6);
}

header .buttonBack {
    display: flex;
    align-items: center;
    text-decoration: none;

    font-weight: 600;
    border-radius: 0.7em;
    background: rgba(32, 48, 60, 0.8);
    color: white;
    padding: 1vh 2.5vw 1vh 2.5vw;
    position: absolute;
    right: 5vw;
}

header .buttonBack:hover {
    background: rgba(32, 48, 60, 0.7);
}

header .buttonBack:active {
    background: rgba(32, 48, 60, 0.9);
}

main {
    width: 98vw;
    height: 70vh;

    margin: 0 1vw;

    border-radius: 1.2em;
    background: rgba(255, 255, 255, 0.7);
}

footer {
    width: 98vw;
    height: 10vh;

    margin: 1vh 1vw 0 1vw;

    border-radius: 1.2em;
    background: rgba(255, 255, 255, 0.7);
}