There are several places to change the font size in the code example you provided. Since itβs not clear which targeting you are using, start with this:
.syntaxhighlighter { width: 100% !important; margin: 1em 0 1em 0 !important; position: relative !important; overflow: auto !important; font-size: 2em !important; }
Sample above changes font-size to 2em
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