Osama Zia on "[Theme: Hueman] Font resizing problem on small resolution screen"

Hi
I am using Heuman theme but I'm facing a small problem. My PC resolution is 1152x864. I have set the entry font to 15px , sidebar h3 to 20px and headings to strong 900. On normal(wide) screen (1380x786) it shows the correct setting I mentioned above. But on my screen which is 1152x864 it shows entryfont 18px , sidebar h3 12px and headings with normal weight. How can I set the fonts for smaller resolution. Entry fonts are looking so big on smaller screen.
Thanks
Here is the site link
http://ozynetwork.com