.volume-converter{background-color:#fff;padding:30px;box-shadow:0 4px 20px rgba(0,0,0,.1);width:100%;max-width:500px;margin:40px auto;color:#a1855a}.volume-converter label{display:block;margin-top:1rem;font-weight:700}.volume-converter select,.volume-converter input{width:100%;padding:12px;margin-top:8px;margin-bottom:10px;border:1px solid #ccc;font-size:16px;box-sizing:border-box}.volume-converter button{width:100%;background-color:#a1855a;color:#fff;padding:14px;margin-top:15px;font-size:16px;border:none;cursor:pointer;transition:background-color .3s ease}.volume-converter button:hover{background-color:#45a049}#results{margin-top:1rem;line-height:1.6}