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

body{
    background:#111;
    color:#fff;
}

header{
    background:#000;
    padding:15px;
}

nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
}

nav ul{
    list-style:none;
    display:flex;
    gap:15px;
}

nav a{
    color:gold;
    text-decoration:none;
}

.hero{
    background:url('https://images.unsplash.com/photo-1503376780353-7e6692767b70') center/cover;
    height:80vh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
}

.btn{
    background:gold;
    color:black;
    padding:10px 20px;
    margin-top:15px;
    text-decoration:none;
}

section{
    padding:40px 20px;
}

.cards{
    display:flex;
    gap:20px;
    flex-wrap:wrap;
}

.card{
    background:#222;
    padding:15px;
    width:300px;
}

.card img{
    width:100%;
}

footer{
    background:#000;
    text-align:center;
    padding:15px;
}