problem with layer of preload - website

In this website www.wirecreation.net 开发者_Go百科sometimes I have a problem with the initial load. I don't know why, the gray div with the logo and the progress bar sometimes has a margin with some pixels, but sometimes not and the margin is zero. I think the problem only exists in chrome...

Any help?

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it is solved with

width:100% !important;
height:100% !important;

thanks