CSS Coding Guidelines

  • All CSS selectors (classes or IDs) are lowercase, multiple words are separated with a hyphen, no underscore nor camel-case.
  • All CSS definitions should take place in a CSS file or in a CSS part at the top of the page, inline styles are highly discouraged.
  • All CSS inclusions should be done through the appropriate <style> tag in HTML, and not through the @import statement, they also should have proper “media” attributes.
  • It is encouraged to use generic classes for common styling issues instead of “id”.
  • It is discouraged to prepend the HTML tag in front of a generic CSS selector, however if you need to specify one, write it in lowercase (span.t3-icon instead of SPAN.t3-icon).
  • Use as little cascading as possible. “It is encourage to use cascading when there is no class defined”
  • Also, it is strongly discouraged to use multiple class definitions in one selector due to a bug in Internet Explorer 6 (e.g. .t3-icon.t3 -icon-blue).
  • Attribute selectors (e.g. input[type=submit]) should be avoided also due to certain limitations in some browsers.

CSS statements are written as below:

.t3-link {
        display: inline;
        overflow: hidden;
        height: 18px;
        padding-bottom: 5px;
        padding-left: 18px;