## MTMExtraCSS

Possible values: | See description
Default value: | Not set
Requirements: | MTMLinkedSS = false;
First available: | 2.3.1
Supported browsers: | All
Description: | This variable is used to add your own CSS rules to the menu's inline style sheet. It does not apply when the menu uses a linked style sheet. The option is an object, and you add rules to it by calling the method `addRule()`, this is done through `MTMExtraCSS.addRule('selector', 'rule')` where "`selector`" is a valid CSS selector (e.g. "`h1.foo`") and "`rule` is a valid CSS property rule (e.g. "`colour: red;` "). You will have to call it once for each rule you wish to add, in other words once for each CSS selector you wish to set. More information about the CSS properties used in the inline style sheet is avaiable in CSS Properties.