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Zoom in and out on mouse click with CSS

I want to zoom image with only CSS. The code below zooms the image when the left button of the mouse is kept pressed but I want to zoom in and out with a mouse click. How can I achieve that?

.container img {
  transition: transform 0.25s ease;
  cursor: zoom-in;
}

.container img:active {
  -webkit-transform: scale(2);
  transform: scale(2);
  cursor: zoom-out;
}
Solution

  • Let's use a trick here, an input checkbox:

    input[type=checkbox] {
  display: none;
}

.container img {
  margin: 100px;
  transition: transform 0.25s ease;
  cursor: zoom-in;
}

input[type=checkbox]:checked ~ label > img {
  transform: scale(2);
  cursor: zoom-out;
}
    <div class="container">
  <input type="checkbox" id="zoomCheck">
  <label for="zoomCheck">
    <img src="https://via.placeholder.com/200">
  </label>
</div>