.cud-tabs{display:flex;gap:10px;margin-bottom:20px;}
.cud-tabs button{padding:10px 20px;border:none;border-radius:5px;background:#3498db;color:#fff;cursor:pointer;transition:.3s;}
.cud-tabs button.active,.cud-tabs button:hover{background:#2980b9;}
.cud-section{display:none;padding:20px;border:1px solid #ccc;border-radius:10px;background:#f8f8f8;}
.cud-section.active{display:block;}