To remove underline from a link, you can use the CSS text-decoration: none to the <a> element. For example, in the HTML:

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<a href="example.com" style="text-decoration: none">Example</a>

The link will be displayed without an underline. You can also directly specify this styling in a stylesheet (CSS):

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a {
    text-decoration: none; 
}

More information on this topic can be found on MDN web docs.

You can make an email link using HTML. An example of the code is below:

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<a href="mailto:someone@example.com">Send an email</a>

The mailto: attribute specifies the recipient. You can also add additional query parameters after the recipient like ?subject=Welcome to include a subject, or ?cc=example@xyz.com to include a carbon copy email address. More information can be found in this guide from CSS-Tricks.

In HTML, the <a> element (short for "anchor") defines a link. In order to remove the underline from the link's text, you need to include the text-decoration property set to none within its style attribute.

For example:

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<a href="example.com" style="text-decoration:none;">This link will not be underlined!</a>

For more information, see this Codecademy article.

In HTML, you can add an target attribute to an a element. The target attribute specifies where to open the linked document. To open the linked document in a new window, use _blank as the target value. For example, to open a link in a new window:

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<a href="https://example.com" target="_blank">Link text</a>

Learn more about the target attribute on the Mozilla Developer Network website.

You need to use Javascript to add functionality to the HTML button. For example:

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function buttonClick() {
  if (condition) {
    window.location.href = "https://example.com/";
  }
}

Then add the onclick attribute to the button element in HTML:

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<button type="button" onclick="buttonClick()">Go to Link</button>

You can learn more about HTML and Javascript from the MDN Web Docs.

To change the color of a link when hovering over it, you can use the CSS pseudo-class :hover. For example:

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a:hover {
  color: red;
}

This code will change the color of the link to red when you hover your mouse over it. You can also use other CSS properties and values to style a link. For more information, see the Mozilla Developer Network reference for the :hover pseudo-class.

You can refer to an anchor by using the id attribute of the target element. For example, suppose you want to refer to an <h1> section on your page, then you would create an anchor link like this:

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<a href="#mySection">My Section</a>

And add an id attribute to the targeted element like this:

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<h1 id="mySection">My Section</h1>

When the user clicks on the link, the page will be scrolled to the <h1> section. For more information, see this page.

In HTML, you can open a link in a new window by using the target attribute set to _blank. For example:

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<a href="https://www.example.com" target="_blank">Link Text</a>

The resulting link will open in a new browser window when clicked. This can also be done with JavaScript, in which case you'd use window.open():

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window.open('https://www.example.com', '_blank');

For more information, see MDN Documentation: Target attribute.