Hi
Sorry, didn’t understood the question what you want to do in the banner.
If you wish to change this banner. Please change the image from directory, located at https://domain.com/assets/images/main-banner.jpg
If you wish to change the banner background color, you have to change the gradient color located below, Hope you are familiar with CSS
located at http://domain.com/assets/css/style.css
Line number 72
.main-banner::before {
content: "";
background: rgba(0, 0, 0, 0) radial-gradient(at center bottom , #0096d6 12%, #00328f) repeat scroll 0 0;
height: 100%;
left: 0;
opacity: 0.7;
position: absolute;
top: 0;
width: 100%;
}
Change only background value in line background: rgba(0, 0, 0, 0) radial-gradient(at center bottom , #0096d6 12%, #00328f) repeat scroll 0 0;
Best regards