line space property css code example

Example 1: line spacing css

line-height: 20px; /* 4px +12px + 4px */
/* OR */
line-height: 1.7em; /* 1em = 12px in this case. 20/12 == 1.666666  */

Example 2: line-height not working

Because the em tag is inline and its line-height cannot be lower than its parent div.

For example, if you set the line-height of the parent to 10px, then you would be able to decrease the line-height of em tag to 10px as well.