Gatsu This line is your problem
background: linear-gradient(rgba(0,0,0,0.95), rgba(0,0,0,0.45)),url(/assets/bg.jpg) !important;
You’re using a background image, but applying a gradient to darken it. Replace the CSS so it looks like this
background: url(/assets/bg.jpg)!important;

However, taking this approach makes the white text difficult to read in my view. You may want to consider using text-shadow
as a means of making the text easier to read if you remove the overlay gradient.