By default, links will appear as follows in all browsers:
        An unvisited link is underlined and blue
        A visited link is underlined and purple
        An active link is underlined and red
    
        By default, the linked page will be displayed in the current browser window. To change this, you must specify another target for the link.
        The target attribute specifies where to open the linked document.
        
        The target attribute can have one of the following values:
        _self - Default. Opens the document in the same window/tab as it was clicked
        _blank - Opens the document in a new window or tab
        _parent - Opens the document in the parent frame
        _top - Opens the document in the full body of the window
    
            a link to a page visit the others website. with the "https://www" part.
 Example: ______________
            Absolute URLs
        
            A local link (a link to a page within the same website) is specified with a relative URL (without the "https://www" part):
 Example: ____________
            Relative URLs
        
 
        Use mailto: inside the href attribute to create a link that opens the user's email program (to let them send a new email):
_________ EmailTo use an HTML button as a link, you have to add some JavaScript code.
The title attribute specifies extra information about an element. The information is most often shown as a tooltip text when the mouse moves over the element.
___________Here, an unvisited link will be green with no underline. A visited link will be pink with no underline. An active link will be yellow and underlined. In addition, when mousing over a link (a:hover) it will become red and underlined:
we can also these css on a Button.