body{
    margin:0;
    font-family:Arial,sans-serif;
    background:#f5f5f5;
}

header{
    background:#222;
    color:#fff;
    padding:20px;
}

header h1{
    margin:0;
    font-size:24px;
}

.container{
    width:1200px;
    max-width:95%;
    margin:auto;
}

main{
    padding:40px 0;
}

.card{
    background:#fff;
    border-radius:8px;
    padding:30px;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}

table{
    width:100%;
    border-collapse:collapse;
    margin-top:20px;
}

table th,
table td{
    border:1px solid #ddd;
    padding:12px;
}

th{
    background:#333;
    color:#fff;
}