Blog

The result of two or more overlapping elements in CSS depends on the specific styles and layout rules applied to the elements. For example:

• If two elements have different values for the z-index property, the element with the higher value will be stacked on top of the element with the lower value.

<style>
  .element1 {
    position: absolute;
    z-index: 1;
    background-color: red;
    width: 200px;
    height: 200px;
  }

  .element2 {
    position: absolute;
    z-index: 2;
    background-color: blue;
    width: 200px;
    height: 200px;
    left: 50px;
    top: 50px;
  }
</style>
<div class="element1">
</div>
<div class="element2">
</div>

In this example, the blue .element2 is stacked on top of the red .element1 because it has a higher z-index value.

• If two elements have the same value for the z-index property, the order of the elements will be determined by their order in the HTML document.

<style>
  .element1 {
    position: absolute;
    z-index: 1;
    background-color: red;
    width: 200px;
    height: 200px;
  }

  .element2 {
    position: absolute;
    z-index: 1;
    background-color: blue;
    width: 200px;
    height: 200px;
    left: 50px;
    top: 50px;
  }
</style>
<div class="element1">
</div>
<div class="element2">
</div>

In this example, the red .element1 is stacked below the blue .element2 because both elements have the same z-index value, and .element2 appears later in the HTML document.

In addition to the z-index property, the size, position, and other layout properties of elements can also influence their behavior when they overlap. For example, elements that have a position property value of absolute or fixed can be positioned relative to other elements or the viewport, and the value of the display property can determine whether an element is a block-level or inline element and how it affects the layout of other elements.