Content widget is basically a md editor which is used for text editing. You can insert images and hyperlinks etc. in this widget.
Layout of content widget on page:
To insert image, click on image icon and syntax should be:

If image present in main folder than we can skip foldername :

To insert link, click on link icon and syntax should be: For internal page linking [Link name](modulename/urlsegment of page) For external page linking Link name
Widget Property
You can set the align of text written in content widget.