body{font-family:Segoe UI,sans-serif;margin-top:70px}
.navbar{background:#1b5e20}
.hero{padding:140px 0;background:linear-gradient(rgba(0,0,0,.6),rgba(0,0,0,.6)),url('https://images.unsplash.com/photo-1501004318641-b39e6451bec6');background-size:cover}
.section{padding:60px 0}
.footer{background:#1b5e20;color:#fff;padding:15px;margin-top:40px}
.card{box-shadow:0 10px 20px rgba(0,0,0,.1)}