You can use a cdn for example(Font awesome) :
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
I believe there are others here who can better advise you on that idea. I'm just gonna share what I found from a web search, in a hope it helps you to get started 👍
P.S. Please mind copyright notices for codes in codepen. Although if you copy for study purpose (not to claim over), I guess it's okay.