HTML Back Button Icon [100%]
It’s easy to add HTML Back Button Icon without additional fonts links, Just write « for the Back button icon in HTML
for Just follow the simple line of code below.
<a href ="#" class = "previous">« Previous</a>
I hope you got the answer to your question.
or you can use another icon for a different type of style.
there are a lot of icons in online like bootstrap icons, flat icons, fontwasome etc.