Without specifying the size of the pictures are displayed. But with the size:
<button>Like<img style="position:absolute;width:2%;heigh" src="fl.png"></button>
Pictures disappear. How to be?
You should look at the presence of display: block; and the height of the element img, just check the nesting of lowercase in block elements, as well as the presence of clearly top, left, z-index (for an element with absolute it should be greater than that of the parent), the presence of position: relative; at parent