Mario Santos

Hello @tiputheroy! To me, it seems this could be solved using CSS, but it could be related to the theme you are using. I recommend asking at GeneratePress Forum so the theme’s developers and support community can help you with this.

Anyway, I believe just by adding something similar to the following CSS lines, using GeneratePress Docs, would be enough. But I would recommend double-checking it with the team as suggested above.

.post-image img, .feature-image img{
    max-width: 100%
    width: 100%;
}