%content {
  position: absolute;
  content: "";
}

%container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px;
}

%vertical-center {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

%horizontal-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

%absolute-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}