body{background-color:#40e0d0;font-family:Arial,sans-serif;margin:0;padding:20px}h1{text-align:center}form{margin-bottom:20px}input[type=text]{color:red;padding:5px;font-size:16px}button{color:#000;padding:5px 10px;font-size:16px}ul{list-style-type:none;padding:0}li{margin-bottom:10px}@media (max-width:600px){h1{font-size:24px}}