.hero {
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: contain;
  background-color: #999; }

.hero-head .button {
  margin: 10px; }

body {
    color: rgb(190, 190, 190);
}

.columns {
  padding: 0 10px;
}

@media (max-width: 768px) {
  .hero {
    background-attachment: scroll;
  }
  .hero-head .button {
    margin: 5px;
  }
  .columns {
    padding: 0 5px;
  }
}