*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}

body{
    background:#f4f6fb;
    color:#222;
}

header{
    background:#1f2937;
    color:white;
    text-align:center;
    padding:30px;
}

header h1{
    margin-bottom:10px;
}

main{
    width:900px;
    max-width:95%;
    margin:40px auto;
    text-align:center;
}

main p{
    color:#666;
    margin-top:10px;
    margin-bottom:30px;
}

.cards{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:25px;
}

.card{
    width:250px;
    background:white;
    padding:25px;
    border-radius:12px;
    box-shadow:0 5px 15px rgba(0,0,0,.1);
}

.card h2{
    margin:15px 0;
}

.card a{
    display:inline-block;
    margin-top:10px;
    padding:10px 20px;
    background:#2563eb;
    color:white;
    text-decoration:none;
    border-radius:6px;
}

.card a:hover{
    background:#1d4ed8;
}

footer{
    text-align:center;
    padding:30px;
    color:#777;
}

.button{
    display:inline-block;
    margin-top:25px;
    padding:10px 20px;
    background:#2563eb;
    color:white;
    text-decoration:none;
    border-radius:6px;
}

.button:hover{
    background:#1d4ed8;
}