how to add blank space in html code example

Example 1: add space in html

<!-- vertical space -->
&nbsp;
&ensp;
&emsp;

<!--horizontal space -->
<br/>

Example 2: leading spaces html

<!--   Add leading white space in front of text  -->

&nbsp;Hello World

<!--    Output:   ' Hello World'    -->

Example 3: html - blank space at left

<span style="padding-left:20px">My text</span>