How to make a video gallery using append() in JQuery?

JavaScript
16

Thanks

there is one more Issue when I integrate this code with my whole code it looks like this

I am trying to add all blocks under the “main-content” class but they are overlapping in my footer class to

let me explain there is 3 class in my case one is
“top-header”,“main-content”,“footer”

I am trying to add all my gallery code under the main-content area but it is spreading till the bottom.And it overlap with footer section.How to fix this?