body{
font-family: Arial;
margin:0;
padding:0;
text-align:center;
}

header{
background:#333;
color:white;
padding:15px;
}

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

.hero{
padding:80px;
background:#f4f4f4;
}

button{
padding:10px 20px;
background:#007BFF;
color:white;
border:none;
cursor:pointer;
}

button:hover{
background:#0056b3;
}

footer{
background:#333;
color:white;
padding:10px;
}