The HTML5 attributes for data validation are

To apply the styles in an external style sheet to an HTML document, you need to code

Validating an HTML file

To provide a label for a control on a form, you should 

To provide a way to automatically send the data in a form to the server, you can add this type of button to the form:

You can use line returns, tabs, and spaces to align your HTML code  

The DOM for a web page is built

The normalize.css style sheet

To get the elements that come after an img element to flow to the right or left of the image, you can use CSS to apply the

When you set the float property for an img element to left,