How to custom Color and Text in Coupon Page ?

I want to customize the color and text in coupon page! Please check image 01 you see below and I have 3 problems:
01. I want to change the colors in frame 50% Off <all of you know white is very bad>. What should I do ?
02. I want to change the font ” website coupons “—-> “Coupons” – more compact view?
03. I want to change ” Click to Reveal ” a “Get Coupon”?

And one more problem : ” Please , view image : https://imgur.com/a/V1oAf ”
My website : bestmaxcoupons.com
My url index follow my “Categories” — View very bad and do not good for SEO — I want to fix it !