body{

font-family: Arial;
margin:0;
padding:0;

}

header{

background:#111;
color:white;
padding:15px;
display:flex;
justify-content:space-between;

}

nav a{

color:white;
margin-left:20px;
text-decoration:none;

}

.hero{

text-align:center;
padding:80px;
background:#f4f4f4;

}

button{

padding:12px 20px;
background:black;
color:white;
border:none;
cursor:pointer;

}

.features{

padding:40px;
text-align:center;

}

.feature{

margin:20px;

}

footer{

background:#111;
color:white;
text-align:center;
padding:20px;

}