Choose an organization scheme You should choose a consistent organization pattern and stick to it. I’m not going to tell you how to organize your style sheets—that depends on what works for you—but here are a few ideas to consider: Organize by selector type. Start with HTML selectors, then IDs, and then classes. Organize based on page structure. Group rules based on their parent tags. This works even better with HTML5 because page structure is stronger. The downside occurs when the same rules need to be applied at different places in the page.

Setting the Table layout Different browsers use different methods to calculate how a particular table should be displayed. Two primary table-layout. Fixed method bases its layout on the width of the table and the width of columns in the first row. This method is generally faster than automatic.  Automatic uses the table column width along with the amount of content in the table data cell to calculate the table data cell width. This will generally render more slowly than the fixed method, but it also produces more accurate results for widths throughout the table.