there is white space on right in html page code example

Example 1: whitespace in html

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

&nbsp;Hello World

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

Example 2: html white space on both sides of the page

html,body
{
    width: 100%;
    margin: 0px;
    padding: 0px;
    overflow-x: hidden; 
}