To optimize your URL keywords, always use a hyphen (-) between words in your weblinks. Google recognizes hyphens as spaces, but not underscores. Slashes (/) are also treated as spaces, but they are not recommended for URLs. However, you can use slashes to …

To avoid inconsistencies across different browsers, always use the following CSS code unless you specify a different value for padding and margin. Some browsers do not set these properties to zero by default.

html {  
padding: 0px;  
margin: 0px;  
} …

never use

position:absolute;  
left:99px;  

its a handy little quick fix to position an element but it doesn’t ever work.