margin css inline code example

Example 1: html inline style margin

<div class="myClass" style="margin-top: 20px;">
<div class="myClass">
<div class="myClass" style="margin-bottom: 20px;">

Example 2: how do I add a vertical margin in css

subject {
  margin-top: /*the size of the margin */ (example: 100px)
  /* or */
  margin-bottom: /*the size of the margin */ (example: 100px)
}