Adjusted code snippets' font-size when in headings
Adjusted code snippets' font-size when in headings

Used the ratio of code-to-regular-text font-size in non-headers: 1.125 / 1.4 =
0.80357.

Arty2/tufte-css,0atman/caddy-tufte-blog,zakgreant/tufte-css,paperdavid/tufte-css,edwardtufte/tufte-css,steven-miller/tufte-css,Laidlaw/tufte-css,altaf-ali/tufte-css,TBRSS/tufte-css,Hillea/tufte-css,caraya/tufte-css,crmackay/tufte-css,mgraupner/tufte-css,daveliepmann/tufte-css,bcmoseley/tufte-css,kristofer/tufte-css,anfedorov/tufte-css,d2m/tufte-css,abremges/tufte-css,jeremykenedy/tufte-css,davelab6/tufte-css,icyflame/cubing,Zegnat/tufte-css