body{
margin:0;
font-family:Arial;
background:#0b0b0b;
color:white;
}

header{
background:#d40000;
padding:20px;
text-align:center;
font-size:26px;
font-weight:bold;
}

nav{
display:flex;
justify-content:center;
gap:20px;
background:#151515;
padding:10px;
}

nav a{
color:white;
text-decoration:none;
font-weight:bold;
}

.container{
max-width:1000px;
margin:auto;
padding:20px;
display:grid;
grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
gap:20px;
}

.card{
background:#1a1a1a;
padding:15px;
border-radius:10px;
border:1px solid #333;
}

.card h3{
color:#d40000;
margin:0;
}