You can add a horizontal line by simply adding <hr> to your document.
There is no close tag.
Add at least one horizontal line to your web page.
This tag places the content within the tags on the centre of the page.
Be careful - you need to use the American spelling - 'center' - in your tags.
Add <center> tags to place your main heading in the centre of the page.
A blockquote is used to display a quote from another person or place.
Text is indented further from the margin than the other content.
It is not used very often, but can be found in some online articles and essays.
Add at least one block quote to your web page.
An unordered list is a set of bullet points.
The <ul> tag is placed before the bullet points and </ul> afterwards.
Each bullet point is placed within <li> tags. That stands for list item.
Add either an unordered or ordered list to your web page. Include at least three items in your list.
An ordered list will number each line.
The <ol> tag is placed before the list and </ol> afterwards.
Each list item is placed within <li> tags.