Misusing of tables may result in the code-to-content ratio increasing. Simplify your webpage code to gain fast loading by using CSS. Locate the DIV block displaying your text content at very beginning of your webpage code so that search engine crawlers can see them first.
Table structure is often an obstacle to search engine positioning as they present crawler’s page reading and impede indexing. We should try to make use of CSS instead of nested tables.
When we code our page, try to give the search engine crawler the shortest route to our textual content wherever possible.
In the navigation menu, instead of using buttons (images) , try to us e text links so that we can optimize it through anchor text and other attributes.