body {font-family:sans-serif;background:#f4f4f4;}

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

.banner {
height:300px;
background:url('https://images.unsplash.com/photo-1551882547-ff40c63fe5fa') center/cover;
color:white;
display:flex;
align-items:center;
justify-content:center;
font-size:30px;
}

.room {
background:white;
margin:10px;
padding:10px;
}

form input, form select {
display:block;
margin:10px 0;
padding:10px;
width:100%;
}