Crafter theme, welcome section background opacity

Hello,
i am having problems finding code sections regading to Welcome section. I would like to reduce or delete the front page element that reduce clarity/opacity of the image in background I upload (for now is that cookie image). Looks like there is some kind of element at the front and can’t find it’s source.
I checked “welcome-section” part in style.css there is only this code regarding to rgba colour and it’s change does not effect that element.

.welcome-section::before {
content: “”;
display: block;
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0,0,0,0.4);
z-index: 1;

Would appreciate some help.
Can provide more code if needed.

The page I need help with: [log in to see the link]