Border-radius 0.5em
<img class="border-radius" src="../assets/images/img-src.jpg">
Border-radius 1em
<img class="border-radius-1" src="../assets/images/img-src.jpg">
Mask 1
<img class="img-mask-1" src="../assets/images/img-src.jpg">
Mask 2
<img class="img-mask-2" src="../assets/images/img-src.jpg">