Imgur's page with an image on it (i.e.
https://imgur.com/igYFPho) isn't the same as the link to the actual image.
To get the image link to embed, right click on the image and choose the "Copy Image Link" or whatever it is for a particular browser, should result in a link with an image extension:
https://i.imgur.com/igYFPho.png
Then use that in the image tags: