Layer images of the same size in a seamless overlap on top of another image

As a novice web developer, I am aiming to stack two images perfectly on top of each other in my project. The application I am working on checks the correctness of user inputted answers by displaying either a checkmark or an "X" mark accordingly. To achieve this visual feedback, CSS and JavaScript will be utilized:

CSS:

#checkmark { visibility: hidden }
#xmark { visibility: visible }

JavaScript:

function showCorrect(input, ans) {
    if (input === ans) {
        document.getElementById('checkmark').style.visibility = 'visible';
    }
}

The goal here is simple - I want the checkmark image to completely overlay the "X" mark image. What would be the most straightforward method to achieve this overlapping effect seamlessly?

javascripthtmlcssimage

Answer №1

Creating Image Overlap Effect:

.imagewrapper {
position:relative;}

.imagewrapper img {
position:absolute;
top:0px;
left:0px;
}

.img1 {
z-index:1
}
.img2 {
z-index:2;
}

HTML Example:

<div class="imagewrapper">
<img class="img1" src="img1.jpg" />
<img class="img2" src="img2.jpg" />
</div>

By following this code, you can achieve the overlapping images effect.

The z-index property determines the stacking order of images.

In addition, you have the option to utilize display:none; and display:block; in JavaScript or adjust the z-index values as an alternative method.

If you choose to use display property, no need for image overlap implementation.

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