Change font color on mobile only

[ErhatRO]

 

Hello! 
In need of assistance changing the font color on my giveaway page for mobile only. It is white on desktop so it doesn’t show on mobile.

 

[ErhatRO]

Righteousofficial.com

right5785*

[AnneLuo · Accepted solution]

You can try this code by following these steps:
Step 1: Go to the online store ->Theme ->Edit Code.
Step 2: Find the theme.liquid file and add the following code before the </head> tag

<style>
@media screen and (max-width: 749px) {
.banner__box * {
    color: #000 !important;
}
 }
</style>

Result:

Hopefully it will help you. If yes then Please don't forget hit Like and Mark it as solution!