Interesting

Hello Mohanraj N . inputcheck variable used in the elseif block is not available here (i.e not defined) because it was declared with a let keyword in the if block. NOTE: let is block scoped . In simple terms variables declared let within a block { } are only accessible within the block. I hope you find this useful. Cheers!!!

Thanks for your review, sure media queries are essential but I decided to cover those concepts I feel are often misunderstood or underused. I will probably consider writing about Media Queries soon.