html declares a block of rules for this page only — … Be sure to check out our HTML attributes section, too. HTML Tag Reference. Rules defined in internal style sheet overrides the rules defined in an external CSS file. A basic HR tag displays the way the browser wants to display it. There are 3 ways of implementing style in HTML : Inline Style : In this method, the style attribute is used inside the HTML start tag. Try Examples. Within style, the title global attribute, if used, defines an alternative style sheet, allowing switching between style sheet sets by scripting languages or user agents. If you add an image to an HTML document you can style it with CSS. Inline Styles. The URL of the target web page is the value of the "src" attribute. We will discuss the Usage: The