I need some help with how to achieve certain design in my web. The problem is that I dont knwo exactly the name of what I need nor the code.
But I know how to explain it.
Imagine this, u got 4 different pages and u place a table with a red square inside. No problems so far... but what if I change my mind and I want it to be yellow? I dont want to change the code of each one of those pages one by one.... is there a way to create a file that will load into those 4 pages so when I modify the file, the 4 pages with the square change without actually having to go through their code?