Please add the code below to the Custom CSS area in Dashboard > Vamtam > General Settings > Custom CSS
Here is a guide how to add custom css: http://support.vamtam.com/solution/categories/159995/folders/9759/articles/200025-how-to-add-custom-css-code-
1. To hide the featured image in a single blog post
Please add this code in the Custom CSS field:
body.single-post .post-article .post-media .media-inner > img {
display: none;
}
2. To hide the featured image in a single portfolio post
Please add this code in the Custom CSS field:
body.single-portfolio article.type-portfolio .portfolio-image-wrapper > img {
display: none;
}