Create CSS to enlarge checkboxes

Question

I am trying to double the size of my checkboxes on a few pages. How do I make that happen in CSS? I don\'t want to style the hover.

Ideas?

Answer 1

Simply add background image to checkbox. And adjust the sizes as you prefer.

The code below automatically adds background when it's checked, and the size remains the same with unchecked status.

No need to specify like:

input[type=checkbox]:checked

or

input[type=checkbox]:checked ~ div label

For ex, all checkboxes:

input[type="checkbox"]{
  background: url('http://refundfx.com.au/uploads/image/checkbox_full.png');
  background-size: 20px;
  background-repeat: no-repeat;
  width: 20px;
  height: 20px;
  margin: 0;
}

See fiddle here.

Answer 2

I have used this library with sucess

http://plugins.krajee.com/checkbox-x

It requires jQuery and bootstrap 3.x

Download the zip here: https://github.com/kartik-v/bootstrap-checkbox-x/zipball/master

Put the contents of the zip in a folder within your project

Pop the needed libs in your header

<link href="http://netdna.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">
<link href="path/to/css/checkbox-x.min.css" media="all" rel="stylesheet" type="text/css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.3/jquery.min.js"></script>
<script src="path/to/js/checkbox-x.min.js" type="text/javascript"></script>

Add the data controls to the element using the data-size="xl" to change the size as shown here http://plugins.krajee.com/cbx-sizes-demo

<label for="element_id">CheckME</label>
<input type="checkbox" name="my_element" id="element_id" value="1" data-toggle="checkbox-x" data-three-state="false" data-size="xl"/>

There are numerous other features as well if you browse the plugin site.

Answer 3

You could always use the checkbox hack to make your own checkbox. This allows for a much more cross browser compatible solution.

I made a quick demo here, obviously you would have to get a transparent .png of a tick, not the one I got.

input[type=checkbox]:checked ~ div label{
    background: url(http://ramyasspace.files.wordpress.com/2011/06/tick.jpg);
    background-size: 100%;
}

---

input {
  display: none;
}

label input[type=checkbox] ~ span {
  display: inline-block;
  vertical-align: middle;
  cursor: pointer;
  background: #fff;
  border: 1px solid #888;
  padding: 1px;
  height: 20px;
  width: 20px;
}

label input[type=checkbox]:checked ~ span {
  /* image: Picol.org, cc-by 3.0, https://commons.wikimedia.org/wiki/File:Accept_Picol_icon.svg */
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32"><path d="M14 18L26 6l4 4-16 16L4 16l4-4z"/></svg>');
  background-size: 100%;
}

<label>
  Click me:
  <input type="checkbox" />
  <span></span>
</label>

Answer 4

To double the size of checkboxes, you can use the CSS scale property. The (2,2) means 2 times the width and 2 times the height of the original, but this will be quite large.

input[type="checkbox"] {
  transform:scale(2, 2);
}

You can also use decimal values, for just slightly bigger checkboxes.

input[type="checkbox"] {
      transform:scale(1.3, 1.3);
    }

Answer 5

Styling checkbox's is a very wierd world full off cross browser issues. More info can be found here http://www.456bereastreet.com/lab/form_controls/checkboxes/ You can also create your own with javascript but this is not great for user accessibility.

So I would tray an avoid changing if possible.

Answer 6

This works. It uses relative sizes so it scales with your current font size.

input[type="checkbox"] {
  width: 1.2em;
  height: 1.2em;
}

You may need to adjust your margins though.