*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    background:#0f172a;
    color:#fff;
    font-family:Arial;
}

header{
    text-align:center;
    padding:40px 20px;
}

header h1{
    font-size:36px;
}

header p{
    margin-top:10px;
    color:#94a3b8;
}

.container{
    max-width:900px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:20px;
    padding:20px;
}

.card{
    display:block;
    text-decoration:none;
    color:#fff;
    background:#1e293b;
    border-radius:15px;
    padding:25px;
    transition:.3s;
}

.card:hover{
    background:#2563eb;
    transform:translateY(-5px);
}

.card h2{
    margin-bottom:15px;
}

.card p{
    color:#cbd5e1;
}