dabblet.css

/* Checkbox Hack */

input[type=checkbox] {
   display: none;
}
label { 
  display: block;
  background: green;
  cursor: pointer;
}

/* Toggled State */
input[type=checkbox]:checked ~ label {
   background: red;
}

dabblet.html

<br><br>
<input type="checkbox" id="toggle-1">
<label for="toggle-1">
  I'm a toggle
</label>

settings.json

{"view":"split-vertical","page":"css"}