body {font-family: Arial; margin:0; background:#f4fbff; color:#00334d;}
header {background:#4db8ff; color:white; padding:20px; text-align:center;}
section {padding:20px;}
.gallery img {width:200px; margin:10px; border-radius:10px;}
iframe {width:100%; height:300px; border:0;}
footer {background:#4db8ff; color:white; text-align:center; padding:10px;}