Links and Images: Adds new line stating that HTML assumes image size unit in pixels (px) when not explicitly defined.

[crystalbajgai]

Added a little bit of information that when measurement units for the "height" and "width" attributes are not explicitly defined the values are assumed to be in pixels (px) by default in HTML. There isn't anything mentioned about this in the lesson. So it could have been confusing for beginners.

Because

In links-and-images lesson on Image Size Attributes, on codepen there is this code:

<img src="https://www.theodinproject.com/mstile-310x310.png" alt="The Odin Project Logo" height="310" width="310">

Here, it is told that its better to always define width and height for proper layout but here just 310 is mentioned without any unit and further clearation. This can confuse beginners. So I added a line stating "Here, the measurement units for the "height" and "width" attributes are not explicitly defined. When you specify dimensions in HTML without a unit, the values are assumed to be in pixels (px) by default.".
This can help the learners get more knowledge and clear the confusion they may have when just seeing the number.

This PR

• A new line is added in Image size attributes: Here, the measurement units for the "height" and "width" attributes are not explicitly defined. When you specify dimensions in HTML without a unit, the values are assumed to be in pixels (px) by default.

Issue

Closes #XXXXX

Additional Information

Pull Request Requirements

• [ X] I have thoroughly read and understand The Odin Project Contributing Guide
• [ X] The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• [ x] The Because section summarizes the reason for this PR
• [x ] The This PR section has a bullet point list describing the changes in this PR
• [ x] If this PR addresses an open issue, it is linked in the Issue section
• [x ] If any lesson files are included in this PR, they have been previewed with the Markdown preview tool to ensure it is formatted correctly
• [ x] If any lesson files are included in this PR, they follow the Layout Style Guide

[KevinMulhern]

Thanks for taking the time to do this @crystalbajgai. But I think this might lead to more confusion than any it might clear up.

By this point in the curriculum, learners will not have touched CSS, including pixels or any other measurement units. Our goal with these early lessons isn't to be 100% technically exhaustive but to give learners just enough to get started.

[crystalbajgai]

Thanks for taking the time to do this @crystalbajgai. But I think this might lead to more confusion than any it might clear up.

By this point in the curriculum, learners will not have touched CSS, including pixels or any other measurement units. Our goal with these early lessons isn't to be 100% technically exhaustive but to give learners just enough to get started.

Alrighty