Custom css to set monospaced fonts in Safari for GitHub and Google

custom.css

@font-face{
    font-family: 'JetBrains Mono';
    src: url('https://raw.githubusercontent.com/JetBrains/JetBrainsMono/master/fonts/webfonts/JetBrainsMono-Regular.woff2') format('woff2'),
         url('https://raw.githubusercontent.com/JetBrains/JetBrainsMono/master/fonts/ttf/JetBrainsMono-Regular.ttf') format('truetype');
}

/* GitHub */
.logged-in * {
	font-family: 'JetBrains Mono';
}

.diff-table * {
	font-family: 'JetBrains Mono' !important;
}

/* Slack */
html[data-cdn*="slack"] * {
	font-family: 'JetBrains Mono';
}

/* Twitter */
#react-root * {
	font-family: 'JetBrains Mono' !important;
}


/* Google */
#printButton.goog-toolbar-button {
	display: none !important;
}

/* DrawIO */
.geEditor {
	font-family: 'JetBrains Mono' !important;
}

body#gsr * {
	font-family: 'JetBrains Mono' !important;
}

/* Stack Overflow */
.question-page * {
	font-family: 'JetBrains Mono' !important;
}

.vsonline-serverless-workbench * {
  font-family: "JetBrains Mono'; !important;
}