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

header{
    background:#003b6d;
    color:white;
    padding:40px;
    text-align:center;
}

nav{
    background:#022140;
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
}

nav a{
    color:white;
    padding:18px;
    text-decoration:none;
}

nav a:hover{
    background:#005b96;
}

.hero{
    padding:60px;
    text-align:center;
    background:#e8eef4;
}

.box{
    background:white;
    margin:30px auto;
    padding:30px;
    width:80%;
    max-width:1000px;
    border-radius:8px;
    box-shadow:0 2px 8px rgba(0,0,0,.15);
}

footer{
    margin-top:40px;
    background:#003b6d;
    color:white;
    text-align:center;
    padding:25px;
}