Looking to enhance the visual appeal of my website, I decided to incorporate a background image within a div. To add more depth and creativity, I am now striving to overlay a semi-transparent black box on top of the image. This overlay will not only allow viewers to see through it but also darken the background image for a striking effect.
If you want to position an image behind a container using CSS, you can utilize the z-index property. By setting the image's z-index to -1 and the container's z-index to 1, you can achieve the effect of a background image. Make sure to position the image absolutely and fill the entire parent element with it.
Here is an example implementation:
**Sample code in index.html **
<div class="container">
<div class="content">
<img src="./images/img.jpg" alt="">
<h1>My content</h1>
</div>
</div>
**Sample code in style.css **
.container {
position: relative;
display: grid;
place-content: center;
z-index: 1;
}
.container .content {
width: 100%;
height: 100%;
background-color: #00000052;
}
.container img {
position: absolute;
z-index: -1;
width: 100%;
height: 100%;
object-fit: cover;
}
To achieve this desired effect easily, simply utilize the CSS brightness filter directly on the image element.
An alternative method would involve stacking two divs using absolute/relative positioning and z-index, but this approach may lead to potential challenges and necessitates writing more code for potentially less optimized performance.
.dark {
filter: brightness(40%);
}<img src="https://randomuser.me/api/portraits/women/68.jpg" width="200" height="200" alt="" />
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