style.css

body,
html {
  width: 100%;
  height: 100%;
  font-family: 'Montserrat', sans-serif;

  background: url(header.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

h1 {
  font-size: 2rem;
  color: #E2dbdb;
  text-align: center;
  text-shadow: 3px 3px rgba(0,0,0,0.2);
}

hr{
  color: #97E300;
  margin: 20px auto;
  border: 3px solid #97E300;
  max-width:  65px;
  opacity: 1;

}

.buffer {
  height: 8rem;
}

.btn {
  font-weight: 700;
  border-radius: 300px;
  text-transform: uppercase;
}

.btn-primary {
  border-color: #B4F435;
  background-color: #97E300;
}

.btn-primary:hover {
  background-color: #5E8C00;
  border-color: #B4F435;
  border-width: 5px;
}

.btn-xl {
  padding: 1rem 2rem;
  color: #5E8C00;
}