I would add display: none; in your css to the .author-box….but if you only want it on certain categories, then try adding the name of that category in front of it. Example, if your category is called “creativity” then do it like this –
.creativity .author-box {
display: none;
}
That will work if your category shows up in your source code as a class. If it shows up as an ID then you’d need to add the ID instead.