image have 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: how to add a background overlay in css
.header {
background: rgba(0, 0, 0, 0.5); /* Black color with 50% alpha/opacity */
}