JSFiddle - React, Tailwind, and code Playground

HTML

<div class="fragment"><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;{</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <a class="code" href="class_talon.html#a139bb330021efa545fd6047fa291dbeb">Set</a>(output);</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;}</div>
<div class="ttc" id="class_talon_html_a139bb330021efa545fd6047fa291dbeb"><div class="ttname"><a href="class_talon.html#a139bb330021efa545fd6047fa291dbeb">Talon::Set</a></div><div class="ttdeci">virtual void Set(float value, uint8_t syncGroup=0)</div><div class="ttdef"><b>Definition:</b> <a href="_talon_8cpp_source.html#l00070">Talon.cpp:70</a></div></div>
</div>

CSS

.lineno {
	background-color: red !important;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}
.line:not(.lineno) {
	background-color: blue;
	-webkit-touch-callout: text !important;
	-webkit-user-select: text !important;
	-khtml-user-select: text !important;
	-moz-user-select: text !important;
	-ms-user-select: text !important;
	user-select: text !important;
}