div {
  display: inline;
  margin-right: 10px;
  padding: 5px;
  border-radius: 10px;
  border: 4px solid black;
  background: lime;
}

.first {
  border: 4px solid red;
}

.second {
  border: 4px solid #000000;
  background: white;
}

.fourth {
  border-color: blue;
}

.fifth {
  border-color: purple;
  background: yellow; 
}

body {
  padding: 10px;
}