Display BOX About

Hi!
It’s not the best solution, but you can hide this block on all pages with next code: .custom-box-about {display:none;} and than show it on selected pages with this code – .page-id-44 .custom-box-about {display:block;} (set specific ID for pages you need). Use custom CSS plugin or child theme to add this CSS.

Child themes tutorial – here
Custom CSS plugin (this for example, you can use anyone) – here

Im css plugin all not work strange ;/

But in child themes first code works – hide block on all page .
Unfortunelly second code not works ;/ I put good id and nothing.

In css, section custom box :

.custom-box-about {display:none;}
.post-id-28 .custom-box-about {display:block;}

any idea why not works ?

Ok everything works but one more question : How is ID front page ?

If you select your latest posts as home page – you can use .home instead of .post-id-...