Hab' mir mal angechaut, wie Google-Icons eingebunden werden können. Die sind ja wie alles bei Google, kostenlos. Vielleicht interessiert es ja den ein oder anderen. Dafür habe ich mal eine Doku erstellt (siehe Anhang).

Hier das Coding zum Abgreifen:

<!---------------------------->
<!-- Google Icons einbinden -->
<!---------------------------->

<link href="https://fonts.googleapis.com/css?family=Material+Icons|Material+Icons+Outlined|Material+Icons+Two+Tone|Material+Icons+Round|Material+Icons+Sharp" rel="stylesheet">

<!--------------------------->
<!—'Home-Icon' formatieren -->
<!--------------------------->

<style>

#iconHome {
font-size: 24px;
color: green;
}

</style>

<i class="material-icons" id="iconHome">home</i>

============================================

<!---------------------------->
<!-- Google Icons einbinden -->
<!---------------------------->

<link href="https://fonts.googleapis.com/css?family=Material+Icons|Material+Icons+Outlined|Material+Icons+Two+Tone|Material+Icons+Round|Material+Icons+Sharp" rel="stylesheet">

<!----------------------->
<!-- Icons formatieren -->
<!----------------------->

<style>

#iconHomeGreen {
font-size: 24px;
color: green;
}

#iconHomeBlue {
font-size: 36px;
color: blue;
}

#iconShoppingCart {
font-size: 48px;
}

</style>

<i class="material-icons" id="iconHomeGreen">home</i>
<i class="material-icons-outlined" id="iconHomeGreen">home</i>
<i class="material-icons-two-tone" id="iconHomeGreen">home</i>
<i class="material-icons-round" id="iconHomeGreen">home</i>
<i class="material-icons-sharp" id="iconHomeGreen">home</i>

<i class="material-icons" id="iconHomeBlue">home</i>
<i class="material-icons-outlined" id="iconHomeBlue">home</i>
<i class="material-icons-two-tone" id="iconHomeBlue">home</i>
<i class="material-icons-round" id="iconHomeBlue">home</i>
<i class="material-icons-sharp" id="iconHomeBlue">home</i>

<i class="material-icons" id="iconShoppingCart">shopping_cart</i>
<i class="material-icons-outlined" id="iconShoppingCart"> shopping_cart </i>
<i class="material-icons-two-tone" id="iconShoppingCart"> shopping_cart </i>
<i class="material-icons-round" id="iconShoppingCart"> shopping_cart </i>
<i class="material-icons-sharp" id="iconShoppingCart"> shopping_cart </i>