buffer space in css code example
Example: padding css
padding:10px 5px 15px 20px;
means
top padding is 10px
right padding is 5px
bottom padding is 15px
left padding is 20px
padding:10px 5px 15px 20px;
means
top padding is 10px
right padding is 5px
bottom padding is 15px
left padding is 20px