dark 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: make background overlay css

#element-with-background-image {
   position: relative;
   background-image: url("//spin.atomicobject.com/wp-content/uploads/20170324102432/portfolio-tips-feature-image.jpg");
}
 
#color-overlay {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background-color: black;
   opacity: 0.6;
}

Example 3: 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);
}

Example 4: make background overlay css

<div id="element-with-background-image">
   <div id="color-overlay"></div>
   ...
</div>

Example 5: div color overlay css

box-shadow: inset 0 0 0 2000px rgb(0 0 0 / 67%);