h1 {
    color: red;
    font-family: Verdana;
    text-align: center;
}
body{
    background-color: lightblue;
    width: 1000px;
    margin:  auto;
}
header {
    background:#fa1161 ;
    padding: 10px;
}
nav {
    background: green;
    padding: 10px;
    text-align: center;
}
main {
    background: white;
    padding: 10px;
    overflow: auto;
}
footer {
    background: green;
    padding: 10px;
}
strong {
    color: green;
}
nav a {
    text-decoration: none;
    background: yellow;
    color: black;
    text-transform: uppercase;
    padding: 5px 10px;
    margin: 0 5px;
    display: inline-block;
}

nav a.active {
    background: #fa1161;
}
nav a:hover {
    background: orange;
}