body{
font-family:Arial;
margin:0;
background:#f4f4f4;
text-align:center;
}

header{
background:#222;
color:white;
padding:20px;
display:flex;
justify-content:space-between;
}

nav a{
color:white;
margin:10px;
text-decoration:none;
}

.hero{
padding:100px;
background:#e6f2ff;
}

.button{
background:#007bff;
color:white;
padding:15px 30px;
text-decoration:none;
border-radius:6px;
}

.features{
display:flex;
justify-content:center;
gap:40px;
padding:50px;
}

.feature{
width:200px;
}

footer{
background:#222;
color:white;
padding:20px;
}
```

---