Overlay Issue on slider - Timevo theme

[ZaidArman]

Hello @everyone, I am trying to remove the overlay from the sliders on my website, despite changing the opacity of overlay to 0 for the sliders and also adding the code to the header that I found from one of the answers in community it doesn't work for me, can somebody be kind enough to help in this regard? TIA!
My Store: Foneix.com
Theme: Timevo 

[ZaidArman]

Thank you very much for your reply, I added this code previously in my theme.liquid file after the head 
<style>
.hero-overlay--dark:before,
.overlay--dark .slide-image:after,
.card-text-overlay--light .image .img:before {
background: transparent !important;
}
</style>

It didn't worked for me, the main issue I am facing is while reviewing it on the mobile device, thank you for your support again!

[ZaidArman]

Sure please, I definitely want to connect!

[ZaidArman]

Yes, you can reach out to me on [email protected] or [email protected]