fontawesome
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous"> <!-- to use Font Awesome in html. This need to be in <head></head> tags to work -->
<body>
<i class="fa fa-linux" aria-hidden="true"></i>
Font Awesome is a font and icon toolkit based on CSS and Less.
It was made by Dave Gandy for use with Bootstrap, and later was incorporated
into the BootstrapCDN.
Font Awesome has a 38% market share among those websites that use third-party
font scripts on their platform, ranking it second place after Google Fonts.
<p>Fixed Width:</p>
<div><i class="fas fa-arrows-alt-v fa-fw"></i> Icon
1</div>
<div><i class="fas fa-band-aid fa-fw"></i> Icon
2</div>
<div><i
class="fab fa-bluetooth-b fa-fw"></i> Icon 3</div>
<p>Without Fixed
Width:</p>
<div><i class="fas fa-arrows-alt-v"></i> Icon 1</div>
<div><i
class="fas fa-band-aid"></i> Icon 2</div>
<div><i class="fab fa-bluetooth-b"></i> Icon
3</div>