body {
  background: hsla(225, 10%, 10%, 0.1);
}
h1 {
  text-align: center;
}
.wrapper {
  width: 1280px;
  min-height: 100vh;
  margin: auto;
  background: hsla(225, 50%, 50%, 0.2);
  border: 1px solid transparent;
  position: relative;
}

.box {
  background-color: hsla(40, 50%, 50%, 0.5);
  width: 250px;
  height: 250px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
}

.wrapper pre code {
  font-size: 24px;
  color: #800;
}