Style checkboxes as Toggle Buttons

Question

On my website, users can post articles and tag them accordingly using some pre-set tags. These tags are in the form of checkboxes. Example below:

Answer 1

Check this out

HTML

Aliens


Ghosts


Monsters

CSS

.vis-hidden {
    border: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}

label {
  margin: 10px;
  padding: 5px;
  border: 1px solid gray;
}

input:focus + label {
  border-color: blue;
}

input:checked + label {
  border-color: red;
}

input:focus:checked + label {
  border-color: green;
}

Note that the last selector may not work in older IE.