how to change square image to rounded image inn css code example

Example 1: rounded immage

border-radius: 15px 50px 30px 5px; (first value applies to top-left corner, second value applies to top-right corner, third value applies to bottom-right corner, and fourth value applies to bottom-left corner)

Example 2: rounded scrolling images

<div class="MagicScroll" data-options="loop: rewind;">    <img src="example1.jpg" />    <img src="example2.jpg" />    ...</div>