body {margin:0;padding:5%;background-color:#fff;font-family:sans-serif;font-size:120%;}
p {margin:1em;}
h1 {color:#e8469b;}
a {text-decoration:none;color:#6ad0d0;}
.knop {background-color:#e8469b;margin:1em;color:white;padding:1ex;border-radius:9px;width:20em;display:inline-block;text-align:center;}
.knop a:hover {background-color:yellow;}
#footer {color:lightgrey;display:block;text-align:center;font-size:80%;clear:both;margin-top:5em;}
#header {display:block;}
#header img {width:25%;}