body{font-family:Arial, sans-serif;margin:0;padding:0;background-color:#f9f9f9;transition:background-color 0.3s, color 0.3s;}body.dark-mode{background-color:#121212;color:#ffffff;}.header{background-color:#ff0000;color:white;text-align:center;padding:20px 0;}.header.dark-mode{background-color:#333;}.download-form{text-align:center;padding:20px;}.download-form input{width:300px;padding:10px;margin-right:10px;}.download-form button{padding:10px 20px;background-color:#ff0000;color:white;border:none;cursor:pointer;}.download-form button.dark-mode{background-color:#333;}.options{display:flex;justify-content:center;padding:20px;}.options label,.options select,.options input[type="checkbox"]{margin:0 10px;}#suggestions{position:absolute;background:white;border:1px solid #ddd;width:300px;max-height:150px;overflow-y:auto;}#suggestions div{padding:10px;cursor:pointer;}#suggestions div:hover{background:#f0f0f0;}