Operating system: Ubuntu 16.04
Browser: Chrome 51

basically there is no problem with custom radio buttons but when i add dir="rtl" to HTML tag and click on radio buttons, the position's width will be 1366px! So when I uncheck the position of .c-input>input using chrome dev-tools, the problem will be fixed.

I tried using radio buttons on Mozila Firefox but I didn't saw such a problem in firefox.

Here is a jsbin for radio buttons: http://jsbin.com/loqutu/edit?html,output