body {
    margin: 0;
    padding-bottom: 60px; /* フッター分の余白を確保 */
    font-family: sans-serif;
}


footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px; /* 3行分の高さを確保 */
    background-color: #333;
    color: white;
    display: flex;
    flex-direction: column;       /* 縦並び */
    align-items: flex-end;        /* 右端に揃える */
    justify-content: space-between; /* 上下に均等配置 */
    font-size: 10px;
    padding: 3px 3px;
    box-sizing: border-box;
    text-align: right;
    z-index: 9999;
}