Check out example codes for "css margin bottom". It will help you in understanding the concepts better.

Code Example 1

.yourClass {
  margin-bottom: 25px;
}

Code Example 2

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

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