1. HTML Images
The first reading discusses HTML images and how to use them properly. The reading states the is empty, it contains attributes and does not have a closing tag. With putting an image into your website you must include src and alt. Src is what specifies the path and where an image comes from. Whereas alt is the text that will placed for an image in case anyone cannot see it.
2.
CSS Background
the second reading discusses the use of CSS colors. Within the text, the author shows how one can use predefined color names to apply color to their website. The author also shows all the different elements you can use color with such as background, text, and border color.
3. CSS Background
the third reading discusses the use of CSS backgrounds. Within the reading, the author discusses the different types of background that can be used within a website. For one you can have a plain background color. Another was using opacity/transparency, which makes the text transparent as well. Or you can use transparency using RGBA which will make the color transparent but not the text.