Try........
1] Select B1:E1 >> Conditional Formatting >> new rule >> choose Use a Formula, enter :
=COUNTIF(B$2:B$5,$D$9)>0
>> Format >> Format Cell fill >> Choose "red" color >> OK
2] Select A1:A5 >> Conditional Formatting >> new rule >> choose Use a Formula, enter :
=COUNTIF($B2:$E2,$D$9)>0
>> Format >> Format Cell fill >> Choose "red" color >> OK
3] Select B2:E5 >> Conditional Formatting >> new rule >> choose Format only cell that contain >> choose : "Cell value" "equal to" "=$D$9"
>> Format >> Format Cell fill >> Choose "red" color >> OK
4] See attached file.
Regards
Bosco