header {
  background: #4c4c4c; /* fallback for old browsers */
  background: -webkit-linear-gradient(to right, #4c4c4c, #222); /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(to right, #4c4c4c, #222); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
  color: #fff;
  text-align: center;
  padding: 50px;
}

h1 {
  font-size: 4em;
  margin: 0;
  text-shadow: 1px 1px #222;
}

h2 {
  font-size: 2em;
  margin: 0;
  text-shadow: 1px 1px #222;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 50px;
}

section {
  margin-bottom: 50px;
}

h3 {
  font-size: 2em;
  margin: 0 0 10px 0;
}

p {
  font-size: 1.2em;
  line-height: 1.5;
}

.button {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  background-color: #1fc8db;
  color: #fff;
  text-decoration: none;
  font-size: 1.2em;
  transition: background-color 0.3s ease-in-out;
}

.button:hover {
  background-color: #2cb5e8;
}