body { font-family: Arial; background:#f4f4f4; margin:0;}
.container { width:90%; margin:auto;}
.card { background:#fff; padding:20px; margin:20px 0; border-radius:10px; box-shadow:0 2px 5px rgba(0,0,0,0.1);}
.btn { background:#111; color:#fff; padding:10px 15px; border:none; border-radius:5px; cursor:pointer;}
input, select { padding:8px; width:100%; margin-top:5px;}
h2 { margin-top:0;}