body{font-family:sans-serif;background:#f0f2f5;margin:0;padding:0;}
.container{max-width:800px;margin:20px auto;padding:20px;background:#fff;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,0.1);}
h2,h3{color:#333;}
input,button{padding:10px;margin:5px 0;width:100%;border:1px solid #ccc;border-radius:4px;}
button{background:#007bff;color:#fff;border:none;cursor:pointer;}
button:hover{background:#0056b3;}
table{width:100%;border-collapse:collapse;margin-top:10px;}
th,td{border:1px solid #ddd;padding:8px;text-align:left;}
th{background:#007bff;color:#fff;}
tr:nth-child(even){background:#f9f9f9;}
.card{padding:15px;margin-bottom:15px;border:1px solid #ddd;border-radius:8px;background:#fafafa;}