So image is not displayed or not saving at all? If you added background color also, then either remove it or add it some transparency, cause now image may be hidden under bg-color. Link to your site would help.
It is exactly as I said- you have to remove background-color for tile bar(or give it some transparency). And on second link you don't have title bar but Visual Composer content.
Your question is pretty general, and I am not sure what you wish to replicate exactly. You can edit these works, to see how they are constructed. What you need to know more?
Like I said this "full height header" is not header but content, to be precise it is "row", from visual composer. So you can see how it is made in work that you like and copy same solution to other works.
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So image is not displayed or not saving at all? If you added background color also, then either remove it or add it some transparency, cause now image may be hidden under bg-color. Link to your site would help.
With kind regards.
Shows on this link but not the one above:~
http://www.beunq.co.uk/work/passenger-clothing/
With kind regards.
With kind regards.
With kind regards.