Radio button group checked property css error

Question

I made the tabs using radio button trick like this

Html

<div class="tabs">
   <input type="radio" id="tab-1" name="tab-group-1" checked>
   <label for="tab-1">Tab One</label>
   <input type="radio" id="tab-2" name="tab-group-1">
   <label for="tab-2">Tab Two</label> 
</div>

then css:

.tabs label {
   margin-left: -1px;
   border: 1px solid;
   padding: 0px 80px 0px 80px;
   background: #ddd;
}

.tabs input[type=radio]:checked ~ .tabs label {
   background: #fff;
   border-bottom: 1px solid #fff;
}

The problem here is the style of label does not change when radio button is chosen. Can anyone help me to explain it, thanks

btw: I run code using IE 8. Does it support checked properties

Answer 1

Check following is the solution. Replace ~ with +.

.tabs label {
   margin-left: -1px;
   border: 1px solid;
   padding: 0px 80px 0px 80px;
   background: #ddd;
}

input[type="radio"]:checked + label {
   background: #fff;
   border-bottom: 1px solid #fff;
}

<div class="tabs">
    <input type="radio" id="tab-1" name="tab-group-1" checked>
   <label for="tab-1">Tab One</label>
       <input type="radio" id="tab-2" name="tab-group-1"/>
   <label for="tab-2">Tab Two</label> 
</div>