Clear/Overwrite css for a input element

I have a problem styling my form. Everything wor开发者_Python百科ks fine except the checkboxes. They look very strange. Have a look at the small rectangle, this is how it looks like when I place a checkbox in my html:

<input id="check" type="checkbox" name="test" value="test"/>

The strange thing is, if I remove my css it does not change. Is there a basic css configuration for a checkbox to make it look like a standart checkbox? I tried things like

#check{background: white !important}

but it does not work.

Any other advice?

Is that the default styling from the browser or you have something like

* { margin: 0; padding: 0 }

in your CSS code? If so... than that's what's causing the default behavior to be removed and is very hard to put back.