How to select label for checked checkbox using CSS?

Question

I'm composing a stringbuilder on serverside (HTML code) and by ajax sending a response to jquery function that puts this HTML in place. On serverside is decided which checkbox will be checked. So far so good.

I would like to select labels for checked checkboxes and change colour so checked countries would be differently coloured. My trouble is that I can't select desired labels and change color property. I tried with this what you see and of course using classes and + and > and :before and other weird things...

So, how to select them and change any property on the label?

I would like to do it using CSS, I know how to do it using jquery but it seems so wrong.

label + input.chkCountry[type="checkbox"]:checked  {color:green;}

<ul class="chkbox">
  <li><label class="lblCountry" for="chkCC_AF"><input type="checkbox" class="chkCountry" id="chkCC_AF" name="chk_AF" value="AF" checked="checked">Afghanistan</label></li>
  <li><label class="lblCountry" for="chkCC_AL"><input type="checkbox" class="chkCountry" id="chkCC_AL" name="chk_AL" value="AL">Albania</label></li>
  <li><label class="lblCountry" for="chkCC_DZ"><input type="checkbox" class="chkCountry" id="chkCC_DZ" name="chk_DZ" value="DZ">Algeria</label></li>
  <li><label class="lblCountry" for="chkCC_AS"><input type="checkbox" class="chkCountry" id="chkCC_AS" name="chk_AS" value="AS">American Samoa</label></li>
</ul>

Answer 1

You only need to change the HTML and selector. In CSS the label doesn't know if the checkbox is checked; so you have to turn it around.

input.chkCountry[type="checkbox"]:checked + label  {color:green;}
/*input:checked + label  {color:green;} /* Short selector */

<ul class="chkbox">
  <li>
    <input type="checkbox" class="chkCountry" id="chkCC_AF" name="chk_AF" value="AF" checked="checked">   
    <label class="lblCountry" for="chkCC_AF">Afghanistan</label>
  </li>
  <li>
    <input type="checkbox" class="chkCountry" id="chkCC_AL" name="chk_AL" value="AL">
    <label class="lblCountry" for="chkCC_AL">Albania</label>
  </li>
  <li>
    <input type="checkbox" class="chkCountry" id="chkCC_DZ" name="chk_DZ" value="DZ">
    <label class="lblCountry" for="chkCC_DZ">Algeria</label>
  </li>
    <li><input type="checkbox" class="chkCountry" id="chkCC_AS" name="chk_AS" value="AS">
    <label class="lblCountry" for="chkCC_AS">American Samoa</label>
  </li>
</ul>

Answer 2

Follow below code example

input[type="checkbox"]:checked ~ label {
    color: green;
}

<ul class="chkbox">
  <li>
    <input type="checkbox" id="chkCC_AF" name="chk_AF" value="AF" checked="checked">
    <label class="lblCountry" for="chkCC_AF">Afghanistan</label>
  </li>
  <li>
    <input type="checkbox" id="chkCC_AL" name="chk_AL" value="AL">
    <label class="lblCountry" for="chkCC_AL">Albania</label>
  </li>
</ul>

You will need to move label after checkbox in your HTML.