When using horizontal buttons,the position of buttons moves upwards

[shrenuj]

Sir, When we hover over on horizontal social buttons,their position goes upwards. for example before hover http://img.ctrlv.in/513214b50ce24.jpg

After hover http://img.ctrlv.in/513214bed53ad.jpg

(example) http://www.ilovetrolls.org/2013/02/parent-related-rage-comics.html

i tried many css tricks,but in vain.I went to stack overflow,again in vain

Is there any way to avoid letting go the elements upwards http://jsfiddle.net/fnkpH/ before img.ctrlv.in/5133081e9637f.jpg

after img.ctrlv.in/513308486124d.jpg

Thanks a ton

oopss got it http://stackoverflow.com/questions/15183660/how-to-prevent-an-element-going-a-bit-up-onhover-changing-position-afterhover