Change image size in blog post

Hi,

You need to remove this css code if you want the featured image to resize automatically based on screen size. This rule sets a minimum height of 630px for the image, preventing it from shrinking while resizing the window. It does preserve the aspect ratio using object-fit: cover.

#top.single-post .fullsize .template-blog .big-preview img {
    width: 1200px;
    min-height: 630px;
    object-fit: cover;
}

Best regards,
Ismael