.vertical-center {
    min-height: 100%;  /* Fallback for browsers do NOT support vh unit */
    min-height: 100vh; /* These two lines are counted as one :-)       */

    display: flex;
    align-items: center;
}

body {
    background: #231F20;
    color: white;
    font-family: "Avenir Next", Verdana, "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "游ゴシック", "Yu Gothic", "メイリオ", Meiryo, Osaka, sans-serif;
}

#row-name {
    margin-bottom: 3%;
}

#row-info {
    line-height: 1.5em;
}