* {
    font-family: "ヒラギノ角ゴシック", "游ゴシック", "メイリオ", Arial, Helvetica, sans-serif;
    color: aliceblue;
    background-color: black;
}

ul.menu {
    display: flex;
    justify-content: center;
}

ul.menu li {
    display: inline;
    text-align: center;
    margin: 0 2em;
}

h1 {
    text-align: center;
}

#introduction {
    width: 80vw;
    margin: 0 auto;
    padding: 30px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    /* Safari support */
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: white;
    text-align: center;
}

#introduction h1 {
    background-color: transparent;
}

#introduction p {
    background-color: transparent;
}

#footer {
    width: 100%;
    height: 100px;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    text-align: center;
    padding-top: 20px;
}

.footer-container {
    background: #010101;
    color: #fff;
    padding: 20px 0;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-size: 1.5em;
    font-weight: bold;
    margin-left: 30px;
}

.footer-logo img {
    height: 100px;
    vertical-align: middle;
}

.footer-list {
    margin-right: 30px;
    text-align: right;
}

.footer-copy {
    flex: 1;
    text-align: center;
    color: #bbb;
    font-size: 0.9em;
}

.honenashi {
    display: none;
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif
}