I have big Cumulative Layout Shift on google core vital web . Google message “Image elements do not have explicit width and height”. I use supply theme. I am not sure which class I should add “height: auto” on the timber.scss.liquid. Please help.
Adding height: auto is useless for your goals.
You need to add a height and width attribute to each image element you want to fix.
So for example, if an image was formatted like
Then you would an height and image attributes using the hieght and width properties of the image object