Hi.
I'm new on html/css, and i'm making french sheet of Warhammer 3e ( wfrp ).
I'm making some customised checkboxes, made with csscheckbox.com :

big problem is : css code provided from csscheckbox.com use "id" selector, which is forbidden here.
When i'm trying to remove id from html code, i can't check/uncheck any case, and i dunno which selector use and which part of css i need to replace.
Here's an exemple, codes of blues checkboxes :
HTML:
Maybe some lines of this can be erased, but i don't wanna try, just in case :>
Thanks
I'm new on html/css, and i'm making french sheet of Warhammer 3e ( wfrp ).
I'm making some customised checkboxes, made with csscheckbox.com :

big problem is : css code provided from csscheckbox.com use "id" selector, which is forbidden here.
When i'm trying to remove id from html code, i can't check/uncheck any case, and i dunno which selector use and which part of css i need to replace.
Here's an exemple, codes of blues checkboxes :
HTML:
<input type="checkbox"checked='true' name="Force1" id="Force1" /></label><label for="Force1"></label>CSS:
<input type="checkbox"checked='true' name="Force2" id="Force2" /></label><label for="Force2"></label>
input[type=checkbox].css-checkbox-caracteristique { position:absolute; z-index:-1000; left:-1000px; overflow: hidden; clip: rect(0 0 0 0); height:1px; width:1px; margin:-1px; padding:0; border:0;and here's a jsfiddle
}
input[type=checkbox].css-checkbox-caracteristique + label.css-label {
padding-left:30px;
height:25px;
display:inline-block;
line-height:25px;
background-repeat:no-repeat;
background-position: 0 0;
font-size:25px;
vertical-align:middle;
cursor:pointer;
}
input[type=checkbox].css-checkbox-caracteristique:checked + label.css-label {
background-position: 0 -25px;
}
label.css-label {
background-image:url(http://csscheckbox.com/checkboxes/u/csscheckbox_d38cca4b67a7029d62498ff7c68d08fb.png);
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
Maybe some lines of this can be erased, but i don't wanna try, just in case :>
Thanks