body{
font-family: Arial, Helvetica, sans-serif;
margin:0;
background:#f5f7fa;
}

header{
background:#003366;
color:white;
padding:15px;
text-align:center;
}

nav{
margin-top:10px;
}

nav a{
color:white;
margin:8px;
text-decoration:none;
font-weight:bold;
display:inline-block;
}

.hero{
background:#1e90ff;
color:white;
padding:40px 20px;
text-align:center;
}

.content{
padding:20px;
max-width:900px;
margin:auto;
background:white;
}

footer{
background:#003366;
color:white;
text-align:center;
padding:15px;
margin-top:30px;
}

/* Video responsive */

video{
width:100%;
max-width:600px;
height:auto;
}

/* Mobile improvements */

@media (max-width:700px){

header h1{
font-size:22px;
}

nav a{
display:block;
margin:10px 0;
}

.hero{
padding:30px 10px;
}

.content{
padding:15px;
}

}