body {
    font-family: sans-serif;
    margin: 0;
    padding: 20px;
}

header {
    text-align: center;
}

main {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 120px); /* Subtract header and footer height */
}

.options {
    text-align: center;
}

.options a {
    display: block;
    margin-bottom: 10px;
    padding: 10px 20px;
    border: 1px solid #ddd;
    text-decoration: none;
    color: #000;
}

.options a:hover {
    background-color: #eee;
}

button {
    padding: 5px 10px;
    border: none;
    cursor: pointer;
  }