It is not possible to reset the checkbox back to the default native style with some web browsers.
You can try this and list every type of input to style −
input[type="text"], input[type="password"] { border: 2px solid green; }
You can also use the CSS3 pseudo-class, but it may or may not work in IE 11 −
input:not([type="checkbox"]) { border: 2px solid green; }