Display a Roll Button when Checkbox is selected

Greetings I hope the above title is self explanatory...when I check the checkbox the Roll Button does not appear...I cannot see the error... Here is my HTML...         <div>             <input class="field40 center" type="checkbox" class="sheet-block-switch" name="attr_skacrobatics" value="1" unchecked>             <div class="sheet-block-a">                 <div class="field10"></div>                 <div class="field130 left">Acrobatics</div>                 <input class="field40 center" type="number" name="attr_skacrobaticsxp" value="0">                 <div class="field10"></div>                 <input class="field40 center" type="number" name="attr_skacrobaticsroll" value="" readonly>             </div>             <div class="sheet-block-b">                 <div class="field10"></div>                 <div class="field130 left">Acrobatics</div>                 <input class="field40 center" type="number" name="attr_skacrobaticsxp" value="0">                 <div class="field10"></div>                 <input class="field40 center" type="number" name="attr_skacrobaticsroll" value="" readonly>                 <button type="roll" name="roll_acrobatics" title='acrobatics' value="&{template:default}{{name=@{character_name} makes an Acrobatics skill roll}}{{needing [[round(@{pre}/5)+9]] or less}}{{and rolls [[3d6cs>7cf<0]]}}"></button>             </div>         </div> and here is my CSS... .sheet-block-a, .sheet-block-switch:checked ~ .sheet-block-b {   display: block; } .sheet-block-b, .sheet-block-switch:checked ~ .sheet-block-a {   display: none; }

You have two class declarations in your checkbox. This <input class="field40 center" type="checkbox" class="sheet-block-switch" name="attr_skacrobatics" value="1" unchecked> should be  <input class="field40 center sheet-block-switch" type="checkbox" name="attr_skacrobatics" value="1" > When you have multiple classes, you separate them by spaces, as you have with field40 and center. You also dont need unchecked in there, since by default checkboxes are not checked.

Problem solved, as always, thanks again GiGs  :)

You're welcome :)