The class is called .shape–round.
However, there is an incompatibility problem with the original code; the following attribute: clip-path: ellipse(45% 45% at 50% 50%) cuts the box-shadow and does not display correctly. The clip-path is responsible for giving the image a rounded shape.
To solve it we are going to remove that attribute (clip-path: none) and add instead (border-radius: 50% !important;).
This is how the code would look (add it in the theme.liquid):
{% if template == 'index' %}
{% endif %}
This would be the result, I hope you like it!
