html, body {
  margin: 0px;
  height: 100%;
  width: 100%;
  font-family: "Courier";
  color: #fff;
}

body {
  background-color: #000;
}

body:before {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
}

.content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}