Font sizes are different for IE8 and Firefox how come

I am using this font

  <link href='http://fonts.googleapis.com/css开发者_运维知识库?family=Droid+Serif:regular,bold&v1' rel='stylesheet'
    type='text/css' />

But the render is different for internet explorer and firefox. It works correctly at firefox, chrome, opera but it shows bigger for internet explorer 8. How can i fix it ?

Use a CSS Reset spreadsheet first.