html,
body {
  width : 100%;
  height: 100%;
}

body {
  color                : #f5f6fa;
  background-color     : #353b48;
  width                : 100%;
  height               : 100%;
  background-attachment: fixed;
}

main {
  text-align: center;
  margin-top: 100px;
}

.logo {
  margin-bottom: 50px;
}