Style Individual Widgets

On my client’s website at http://dressconfess.com/register/ I am having a major issue where when I try styling the social sign-on widget on the header, the styles also carry onto the widgets displayed on my login and register page.

For example the link I provided shows how the buttons are pulled to the left and are displayed horizontally like the header buttons which should not be the case.

I tried creating a custom element for the page widget however that wouldn’t allow me to style the text and buttons individually.

Any assistance is greatly appreciated.

http://ww.wp.xz.cn/extend/plugins/wordpress-social-login/