body {
    font-family: Arial, "微軟正黑體";
    user-select: none;
    list-style-type: none;
    background-color: #1C1C1C;
    margin: auto;
    /* 可以使網頁水平居中 */
}

.hidden {
    display: none;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.fixed-header {
    position: fixed;
    width: 350px;
    background-color: #770101;
    top: 20%;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    border-radius: 10px;
    transition: transform 0.3s ease-in-out;
}

.fixed-header ul {
    list-style-type: none;
    padding: 0;
}

.fixed-header li {
    padding: 5px;
}

.fixed-header a {
    color: #ffffff;
    text-decoration: none;
    font-size: 100px;
    font-weight: bold;
}

.menu {
    position: fixed;
    top: 50%;
    width: 100%;
    background-color: #ffffff;
}

.menu ul {
    list-style-type: none;
    padding: 0;
}

.menu a {
    color: #770101;
    text-decoration: none;
    font-size: 20px;
    font-weight: bold;
    transition: background-color 0.3s, color 0.3s;
    padding: 15px;
}

.menu a:hover {
    background-color: #770101;
    color: #ffffff;
}