Icons not changing size with use of fontsize

[wigsnes]

• The issue is present in the latest release.
• I have searched the issues of this repository and believe that this is not a duplicate.

Current Behavior 😯

Icons do not change in size, stays in default, might be CSS files that are in the wrong order. Not sure.

Expected Behavior 🤔

Should be different sizes.

Steps to Reproduce 🕹

Here is demo showing the problem:
https://codesandbox.io/s/material-demo-oizfb

[oliviertassinari]

@wigsnes You need to get the Material-UI styles injected after the material.io styles. In your case, the styles should be linked from the head, not the body element.

[support]

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