STIX fonts not recognized by MathJax after installation

[Oats]

Hello,
Every website that I go on that has MathJax support displays math in a font that almost looks like the default Computer Modern $\LaTeX$ font. The following is taken from Math Stack Exchange:

I heard that MathJax usually looks for the STIX font located on your computer, and if it does not find it, it will instead resort to the above font. Now, I actually $\textit{want}$ to use STIX font, so I went ahead and downloaded the STIX font package on their website. I got a file with the following contents:

The docs folder only had documentation. Inside the Fonts folder was:

And inside the OTF folder, which is supposedly what I am supposed to use (the others contained webfonts that I don't know how to open nor what to do with), there is:

I opened each and installed the fonts seen here, and they appear as such in the control panel fonts section. However, even after restarting my computer, any website with MathJax does not use STIX fonts.
Can anyone help? Is there something I am doing wrong? Thanks in advance for any response.

 

[Greg Bernhardt]

However, even after restarting my computer, any website with MathJax does not use STIX fonts.

Depends if the website that is using MathJax specifies Stix font for use in their config. On PF we set Tex as the preferred font but list Stix as available. I am unsure how to force Stix on your end.