/* Note that the body element has predefined margin and padding that in this
case we want to get rid of */
body {
  
}

#inner-box {
  /* Can also use "border" to set all the border styles in one line */
  /* border: 50px solid pink; */
  border: 75px solid pink;
  background-color: salmon;
  height: 350px;
  width: 350px;
}

#outer-box {
  background-color: teal;
  padding: 75px;
  height: 500px;
  width: 500px;
}