blog license: creativecommons

一、Reference

creative commons

How can I license my content in a blogpost?

二、Get License HTML

三、Modify mdBook template

3.1 Add HTML

./theme/index.hbs

<div id="bottom"> 
	<a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png" /></a>
</div>   	 

3.2 Add CSS

./theme/css/general.css

#bottom{
    display: flex;
    justify-content: space-between;
    align-items: center;
}