How to add HTML to homepage only?

[Speedie]

Hi,
I'd like to add some HTML code in the header section, but I only want it to appear on the homepage. Could someone advise the necessary CSS? Many thanks.

[Allen]

Hi,
I'd like to add some HTML code in the header section, but I only want it to appear on the homepage. Could someone advise the necessary CSS? Many thanks.
Looks like you are doing it already, did you figure it out?

[Speedie]

Looks like you are doing it already, did you figure it out?
Thanks Allen I realised I was already doing it with some other text so used the same method (I think you showed me originally).