Prerequisites
What problem is your feature request going to solve? Please describe.
Having max-width option for images to be only percent seems silly as a designer, having used max-width using pixels pretty always in max-width situations. For example, an image that you want to fill 100% of its container but not if its container exceeds 300px. A common use would be a thumbnail in a short left column and its corresponding text in a wide right column. When the device is mobile and those columns stack, that thumbnail can now fill the screen and look silly. YES, there are workarounds, for example having to add something like "selector img {width:100%;max-width:350px;}", which I do very often.
It would just be convenient if the choice of pixels was standard.
Describe the solution you'd like
What would be nice is like this image. Add a switcher to define Max Width by either % or PX

Thank you!
Prerequisites
What problem is your feature request going to solve? Please describe.
Having max-width option for images to be only percent seems silly as a designer, having used max-width using pixels pretty always in max-width situations. For example, an image that you want to fill 100% of its container but not if its container exceeds 300px. A common use would be a thumbnail in a short left column and its corresponding text in a wide right column. When the device is mobile and those columns stack, that thumbnail can now fill the screen and look silly. YES, there are workarounds, for example having to add something like "selector img {width:100%;max-width:350px;}", which I do very often.
It would just be convenient if the choice of pixels was standard.
Describe the solution you'd like
What would be nice is like this image. Add a switcher to define Max Width by either % or PX

Thank you!