html,
body {
  height: 100%;
  margin: 0;
}

body {
  background-color: #ececec;
}

main {
  display: flex;
}

header {
  text-align: center;
}

main > .banner {
  max-width: 20%;
  width: 100%;
}

main > .content {
  max-width: 80%;
  width: 100%;
  padding: 0 50px;
}

button {
  background: #000;
  border: 1px solid #000;
  color: #fff;
  font-size: 14px;
  padding: 6px 16px;
  text-transform: uppercase;
  cursor: pointer;
}

button:hover {
  background: transparent;
  color: #000;
}

.hidden {
  display: none;
}

@media (max-width: 992px) {
  main {
    flex-direction: column;
  }
}

@media (max-width: 767px) {
  main > .content {
    padding: 0 20px;
  }
}