HTML Snippet: Symbols and Blank Spaces

  is used for a single blank space

If more identation is required on the left side, then

<span style="padding-left:20px">This line starts after some blank space at left</span>

&lt is used to display '<' symbol.

&gt is used to display '>' symbol

&amp is used to display '&' symbol

Reference Links
Spaces in HTML
Symbols in HTML