How to add a twitter button to your web site?
Steps
Go to HTTPS://PUBLISH.TWITTER.COM/#. Click twitter buttons. Select a kind of button. I'd like to a share button to my web site. So I click Share Button. Then click Copy Code button to get the embedded code. It looks like this.
<a href="https://twitter.com/share?ref_src=twsrc%5Etfw" class="twitter-share-button" data-show-count="false">Tweet</a><script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
I want to change the icon of twitter button. But I don't know how to do that.