html margin's double up to make a space thats too big code example

Example 1: leading spaces html

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

&nbsp;Hello World

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

Example 2: html marquee space between images

<MARQUEE WIDTH="25%" BGCOLOR=YELLOW><p>Howdy there!</p><p>Good to see ya!</p></MARQUEE>Hi There!
<MARQUEE HSPACE=10 WIDTH="25%" BGCOLOR=YELLOW><p>Howdy there!</p><p>Good to see ya!</p></MARQUEE>Hi There!
<MARQUEE HSPACE=50 WIDTH="25%" BGCOLOR=YELLOW><p>Howdy there!</p><p>Good to see ya!</p></MARQUEE>Hi There!