.simple-sub-calc{max-width:500px;margin:20px auto;padding:20px;background:#fff;border:1px solid #ddd;border-radius:8px;font-family:Arial,sans-serif}.simple-sub-calc h2{margin-top:0;color:#333}.sub-form{margin-bottom:20px}.sub-form label{display:block;margin:10px 0 5px;font-weight:700}.sub-form input{width:100%;padding:8px;box-sizing:border-box;border:1px solid #ccc;border-radius:4px}#add-sub-btn{margin-top:10px;padding:10px 20px;background:#0073aa;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:16px}#add-sub-btn:hover{background:#005177}#sub-list ul{list-style:none;padding:0}#sub-list li{padding:10px;background:#f9f9f9;margin-bottom:5px;border-radius:4px;display:flex;justify-content:space-between;align-items:center}#sub-list li button{padding:5px 10px;background:#dc3232;color:#fff;border:none;border-radius:3px;cursor:pointer}#sub-total{margin:20px 0;padding:15px;background:#f0f8ff;border-radius:4px;font-size:18px}#clear-subs{padding:8px 16px;background:#666;color:#fff;border:none;border-radius:4px;cursor:pointer}#clear-subs:hover{background:#444}