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                This is just some random text. 

We can tag it, but we don't have to.

Notice that the browser does not honor any whitespace, except 

<h6>It doesn't honor ENTERs and TABs.</h6>
<h3>It doesn't honor ENTERs and TABs.</h3>
<h1>It doesn't honor ENTERs and TABs.</h1>
<div>It doesn't honor ENTERs and TABs.</div>



                div { background: orange; border: 1px solid tomato }

HTML Conclusions: 
3. HTML elements have an opening tag: <>, and a closing tag: </>
4. Some HTML elements only have an opening tag. No need to close a <br> or an <hr>!

CSS Conclusions:
1. CSS is used to make a web page better-looking.
2. This is achieved using CSS declarations. This is a "formula" for a CSS declaration:

target {
  property: value;
  property: value;

In our example:
- the first target is the <div> element.  
- the first property is the "background" property.
- the value on the first property is "plum". It is a named HTML color.
- there are many named HTML colors, we'll be using only food-named colors here. There are about 10 of those.
- the second property is the "border" property.
- the value on the "border" property is "1px solid blue". As we can see here, this property has 3 values. This is sometimes possible in CSS.
- To remove all the borders simply use: "border: none" property-value pair.