change H3 styling in a single segment on one page

hi, i'm assuming this is a rather easy question but drawing a blank on exact way to code this.

Through site styles i edited H3 heading to be uppercase. There is 1 text block on another page where i would like to either block the upper case formatting or change it to capitalization.

this is the text block 

#block-yui_3_17_2_1_1548865442284_10885

also on this page i already have code running for a form, do i just skip a few lines and add the code?

specific url i want to stop the formatting:

https://e-kytex.com/contact

Hi @kytex,

This code should do the trick. You'll paste it into Design > Custom CSS

#block-yui_3_17_2_1_1548865442284_10885 h3 {
    text-transform: none !important;
}