A Pen by Andy Walpole.

Animated-form-checkboxes.markdown

Animated form checkboxes

As in the title - visually simple animated form checkboxes

A Pen by Andy Walpole on CodePen.

License.

index.html

<form method="post" action="/">
  
<fieldset>
<legend>Select your pizza toppings:</legend>
  
<input id="ham" type="checkbox" name="toppings" value="ham">
<label for="ham">Ham</label>
  
<input id="pepperoni" type="checkbox" name="toppings" value="pepperoni">
<label for="pepperoni">Pepperoni</label>
  
<input id="mushrooms" type="checkbox" name="toppings" value="mushrooms">
<label for="mushrooms">Mushrooms</label>
  
</fieldset>
</form>

style.css

body {
  padding: 20px;
  color: #373737;
  font-size: 62.5%;
  line-height: 2.0em;
}

*, *:before, *:after {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

form {
  width: 400px;
}

legend {
  font-size: 16px;
  font-family: monospace;
}

fieldset {
  padding: 15px;
}

input[type=checkbox] {
  opacity: 0;
}

input[type=checkbox] + label {
  margin: 0 0 0 20px;
  position: relative;
  cursor: pointer;
  font-size: 16px;
  font-family: monospace;
}

input[type=checkbox] + label ~ label {
  margin: 0 0 0 40px;
}

input[type=checkbox] + label::before {
  content: ' ';
  position: absolute;
  left: -35px;
  top: -5px;
  width: 25px;
  height: 25px;
  display: block;
  background: white;
  border: 1px solid darkgray;
}

input[type=checkbox] + label::after {
  content: ' ';
  position: absolute;
  left: -35px;
  top: -5px;
  width: 23px;
  height: 23px;
  display: block;
  z-index: 1;
  background: url('data:image/svg+xml;base64,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') no-repeat center center;
 -ms-transition: all .2s ease;
  -webkit-transition: all .2s ease;
  transition: all .3s ease;
  -ms-transform: scale(0);
  -webkit-transform: scale(0);
  transform: scale(0);
  opacity: 0;
}

input[type=checkbox]:checked + label::after {
  -ms-transform: scale(1);
  -webkit-transform: scale(1);
  transform: scale(1);
  opacity: 1;
}