add image color overlay css code example
Example 1: How to overlay image with color in CSS?
background: linear-gradient(#3204fdba, #9907facc), url(https://picsum.photos/1280/853/?random=1) no-repeat top center;
Example 2: overlay color on image css
footer#site-footer{
position:relative;
}
footer#site-footer:before { /* use before property (pseudo-element) */
position: absolute;
content: '';
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0,0,0,0.3);
}