body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.hero {
  height: 100vh;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
              url('images/mountainbackground.jpg') center/cover no-repeat;
}

h2 {
  font-weight: 600;
  color: #333;
}
img{
  text-align: center;
}