Conditional Formatting - Changing Row formatting from single cell input

Hello again,

Hopefully another easyish question.

I have a worksheet that i wish to perform some conditional formatting on.

There is some descriptive text in cells A1 and A2. From A3-A10 there are some cells where any number of them could be marked off with an 'X'.

If any of the cells from A3-A10 contain an X, I would like the colour of the row from A1 through to A10 to change to say, red.

This is the same for row B, C, D etc.

I have managed to get single cells to change, but am struggling with rows. I am also struggling with the fact that it could be an X in any number of cells, rather than saying cell A5=X, for example.

Hope this makes sense, any help would be gratefully appreciated.

Many thanks,

Mark

Select the whole range, e.g. A1:Z10 and use conditional formatting formula is option with formula

=COUNTIF(A$3:A$10,"x")

choose red format > OK

thanks very much