Execute JavaScript in Primary Header

I would like to change the background colour of the default header that shows when I preview the full project. How do I do that? I can see where I can create one, but I just want to change the colour.  

Hi everyone In a Flow project, I am currently using two different headers for two different types of pages. What we've recently noticed is that when we switch from a page with a header to a page with no headers, there is a delay between when the header disappears. The header from the previous page remains for a few seconds. If there a location within DK where a setting has to be disabled or is this meant to happen? The header is a simple image Thanks  

Is there any way to lock the header section in a vertical scrolling project so that it stays fixed in place at the top of the screen whilst the rest of the screen is scrolled?  

I currently have a project that was developed in Claro that includes quite a few target pages to incorporate branching. The customer wants to eliminate any type of branching or extraneous clicking and has asked that I make the project linear. Is there a way for me to convert the target pages to main pages? Or do I need to redo every page from scratch? When I click on new page from existing project the only options I get are "Structure" and "Master".   

We have updated our projects to include a header that pulls the name of each page into the header. Now, when previewing the "current page", we no longer see the page title at the top (it does not show the page with a header). Is there anyway to preview a single page with the header attached? Thank you in advance,  

In reading the article Rounding Rollercoaster, please confirm if this javascript update can be made in Flow. In a course being developed, quiz scores show as decimals when less than 100%.  Some questions have more than 1 correct answer.  

I'm trying to create an interaction where pressing the Close button on a pop-up triggers the previous element on the page to hide and a new element to show. Is it possible to achieve that (perhaps by leveraging JavaScript in the conditions)?    Thanks! 

I want to change the style and add some interactivity to flip cards and tab table elements. Can I add html, css, javascript to flip cards or other elements and if so, what is the workflow?  

Is there a way to add a trigger to every page in a project at once? I'm attempting to add javascript that is triggered on page load for every page in a course (after the course was already completed - this is for a migration effort). The only way I can find to do this is adding them one at a time to each page, which is painfully time-consuming.