.invoice-image{max-width:100%;border:2px solid #ddd;border-radius:5px;margin:20px 0;box-shadow:0 10px 30px rgba(0,0,0,.15)}.download-btn{display:inline-block;margin:20px auto;background:linear-gradient(135deg,#27ae60,#2ecc71);color:white;padding:16px 35px;border-radius:8px;text-decoration:none;font-size:18px;font-weight:700;box-shadow:0 4px 15px rgba(39,174,96,.3);transition:all .3s;border:none;cursor:pointer}.download-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(39,174,96,.4)}