h1 { color:rgba(0, 128, 0, 0.829);text-align: center;background-color: antiquewhite;font-size: 40px; border-color: green; }

h2 {color:rgba(255, 0, 0, 0.61);margin: 30px;}

p {color: white;margin:30px;background-color: burlywood;padding: 10px;
    border-color: rgb(129, 104, 104);border-width: 8px;border-style:solid;}

body {background-color: black;}

li {color:white;margin: 30px;}

box-shadow: 10px 5px 10px black;padding:30px ;background-color: blanchedalmond

p.subheading{text-align: center}

iframe{ margin: auto;
display: block;}

nav {
    background-color: rgba(128, 128, 128, 0.74);padding-bottom: 25px;
a {display:inline-block;background-color: azure;padding:9px ;margin: 7px ; transition-duration: 500ms; box-shadow: 5px;};
a:hover 
    {background-color: brown;
    translate: 0 -10px;}

padding: 11px; position: fixed;top: 0 ;left: 0; width: 100%;}
body {margin-top: 80px;}

img {display:block}