body{
font-family:Arial;
margin:0;
}

header{
background:#0d6efd;
color:white;
display:flex;
justify-content:space-between;
padding:15px;
}

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

.hero{
background:#f4f4f4;
text-align:center;
padding:60px;
}

.service{
background:#eee;
margin:10px;
padding:20px;
border-radius:5px;
}

footer{
background:#222;
color:white;
text-align:center;
padding:15px;
}

@media(max-width:768px){

header{
flex-direction:column;
}

}