I've chosen to use one of the many Google Web Fonts as the main font for my website. The website is being displayed on both a Mac and Windows computer yet the font appears slightly different in terms of their dimensions and spacial conformations on the page.

The code in the CSS to apply the font is:
html, body {
font-family: 'Lato', sans-serif;
}
just like how the font website suggests embedding the font into the website. (Also the font is linked within the header file as required).
The web browser I am using is Chrome in both instances, however the results stay the same if I use Safari on Mac or Firefox on Windows or any other assortment of browsers. It seems to be a system level thing going on here.
What options do I have to go about fixing this so that I can still use a Google Web Font for my website?