how do you add an img class to img class i already have a class in the img
<img class=“smaller-image”“thick-green-border” src=“https://bit.ly/fcc-relaxing-cat” alt="A cute orange cat lying on its back. ">this is what i did and adding a comma doesnt help
The challenge Add Borders Around Your Elements describes how to apply multiple classes to one element.
use the another class in the same class like this you can use the multiple classse in same class.
<img src="somthing.jpg" alt="this_image" class="smaller-image img-circled img-fluid"
To add more than one class to an element, just separate the class names with a space. For example, I added two classes classes to your image below…
<img class=“smaller-image thick-green-border” src=’//cdck-file-uploads-global.s3.dualstack.us-west-2.amazonaws.com/freecodecamp/original/3X/6/1/61a3499c5abb165be990aa0c1abd23342e60c663.jpg’ alt=“A cute orange cat lying on its back.” />

Try it to make sure it works. Hope that helps 
Do you have a question?