Creating a custom checkbox with CSS & Bootstrap - html

Question

I have the following mark-up using the bootstrap framework.
<div class="col-md-4">
<div class="custom-container">
<img class="center-block img-responsive img-circle invite-contact-trybe" src="{$img}" alt="Contact Image">
<input class="invite-contact-checkbox" type="checkbox">
</div>
</div>
I would like to achieve the following:
Is there anyway to do this using CSS?
I would obviously need 3 states:
Initial:
.custom-container input[type=checkbox]{}
Some form of hover state:
.custom-container input[type=checkbox]:hover{}
When it is checked:
.custom-container input[type=checkbox]:checked{}
Can anyone suggest a solution?

Answer 1

Background image checkbox replacement
Let's create this
This is a very simple example using a :before pseudo element as well as :checked and :hover states.
With this clean HTML
<input type="checkbox" id="inputOne" />
<label for="inputOne"></label>
Note the matching for and id attributes, this attaches the label to the checkbox. Also, the order of elements is very important; the label must come after the input so we can style with input:checked
As well as this Basic CSS
The checkbox is hidden with display: none and all interaction is done with the label
The :after pseudo element is given a unicode tick (\2714) but this could also be ticked with a background image.
The jagged edge caused by the border-radius can be softened by a matching color box-shadow. The inside edge of the border looks fine when the background image is not a solid block of color.
The transition: all 0.4s creates a smooth fade in / out for the border.
I have added more guidance in CSS comments.
Complete Example
input[type=checkbox] {
display: none;
}
/*
- Style each label that is directly after the input
- position: relative; will ensure that any position: absolute children will position themselves in relation to it
*/
input[type=checkbox] + label {
position: relative;
background: url(http://i.stack.imgur.com/ocgp1.jpg) no-repeat;
height: 50px;
width: 50px;
display: block;
border-radius: 50%;
transition: box-shadow 0.4s, border 0.4s;
border: solid 5px #FFF;
box-shadow: 0 0 1px #FFF;/* Soften the jagged edge */
cursor: pointer;
}
/* Provide a border when hovered and when the checkbox before it is checked */
input[type=checkbox] + label:hover,
input[type=checkbox]:checked + label {
border: solid 5px #F00;
box-shadow: 0 0 1px #F00;
/* Soften the jagged edge */
}
/*
- Create a pseudo element :after when checked and provide a tick
- Center the content
*/
input[type=checkbox]:checked + label:after {
content: '\2714';
/*content is required, though it can be empty - content: '';*/
height: 1em;
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
margin: auto;
color: #F00;
line-height: 1;
font-size: 18px;
text-align: center;
}
<input type="checkbox" id="inputOne" />
<label for="inputOne"></label>