body{
font-family:Arial;
margin:0;
background:#111;
color:#fff;
text-align:center;
}

header{
padding:30px;
background:#1e1e1e;
}

.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:20px;
padding:20px;
}

.card{
background:#222;
padding:20px;
border-radius:10px;
box-shadow:0 0 10px rgba(0,0,0,0.5);
}

.card a{
display:inline-block;
margin-top:10px;
padding:10px 20px;
background:#28a745;
color:#fff;
text-decoration:none;
border-radius:5px;
}

footer{
padding:20px;
background:#1e1e1e;
margin-top:20px;
}