Hi.,

1 ) Get into Admin panel > Appearance > FlashNews Option > Layout > Custom CSS > Enable Custom CSS > Yes > Pasted the below css code inside the text area > Save All.

.single-post .blog-entry .entry-title h4 {
    display: none;
}

2 ) Sorry for the trouble, as of now we don’t have global single blog posts layout option. You have to assign manually.

3 ) Please be more specific about your issue, With some screenshot. So that we will have a clear look from our end. Then we’ll help you to get rid of it.