As Guido says, you really need to learn CSS. hspace is deprecated in HTML4. See this article: http://www.codehelp.co.uk/html/deprecated.html
Older HTML tags and attributes that have been superseded by other more functional or flexible alternatives (whether as HTML or as CSS ) are declared as deprecated in HTML4 by the W3C - the consortium that sets the HTML standards. Browsers should continue to support deprecated tags and attributes, but eventually these tags are likely to become obsolete and so future support cannot be guaranteed.