body{
    font-family:Arial,sans-serif;
    background:#f5f7fb;
    margin:0;
    padding:0;
}
.container{
    max-width:1200px;
    margin:auto;
    padding:30px;
}
.card{
    background:#fff;
    border-radius:16px;
    padding:20px;
    margin-bottom:20px;
    box-shadow:0 2px 10px rgba(0,0,0,0.05);
}
.btn{
    display:inline-block;
    padding:12px 18px;
    background:#2563eb;
    color:#fff;
    border-radius:10px;
    text-decoration:none;
}