body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to right, #4a90e2, #50e3c2);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
    overflow: hidden; /* 防止滚动条出现 */
}

.container {
    padding: 40px;
    border-radius: 15px;
    background-color: rgba(0, 0, 0, 0.5);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease-in-out;
}

.container:hover {
    transform: scale(1.05);
}

h1 {
    font-size: 4em;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

p {
    font-size: 1.8em;
    margin-top: 10px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.dropdown {
    position: relative;
    display: inline-block;
    margin-top: 30px;
}

.dropbtn {
    background-color: #4a90e2;
    color: white;
    padding: 12px 25px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.dropbtn:hover {
    background-color: #357abf;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: rgba(0, 0, 0, 0.8);
    min-width: 180px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    z-index: 1;
    border-radius: 8px;
    overflow: hidden;
}

.dropdown-content a {
    color: white;
    padding: 15px 20px;
    text-decoration: none;
    display: block;
    transition: background-color 0.3s ease;
}

.dropdown-content a:hover {
    background-color: #575757;
}

.dropdown:hover .dropdown-content {
    display: block;
}