* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
background-color: aqua;
}

.cent{
  font-family: monospace;
  border: solid brown;
  margin: auto;
  width: 50%;
  padding: 10px;
  background: #000;
}

.container {
  height: 200px;
  position: relative;
  border: 3px solid rgb(0, 0, 0);
  text-align: center;
}