*{margin:0; padding:0; font-family:arial;}

section{width:100%; height:1000px; float:left;}

#pageA{
    background: url("bg.jpeg");
    background-repeat:no-repeat;
    background-size: 300px 100 px;
}
#pageB{background:#8dbdd8}
#pageC{background:#68a7ca}
#pageD{background:#4390bc}

nav{width:100%; position:static; z-index:1; top:80px;}

ul{width:fit-content; margin:auto; list-style:none}

ul li{float:left; margin-right:30px;}

ul li a{color:#fff; text-decoration:none;}

ul li a:hover{text-decoration:underline;}

h1{color:#fff; text-align:center; margin-top:150px;}