This is not a tag. It is an attribute and part of CSS
HTML does not have a built-in way to set margins without CSS. Margins are a property of Cascading Style Sheets (CSS), not of HTML. To set margins in HTML, you need to use CSS either directly in a “style” attribute of an HTML element, or by using an external CSS file linked to your HTML document.
Transparency is an attribute of CSS in HTML. Any header or text can be put to transparent using this property.
You can set the color of margin in CSS. The attribute margin-color is what sets it.
"class" is an attribute of most if not all HTML tags. To apply a CSS class to a tag, simply make the class attribute equal to that CSS class. For example, suppose you have a CSS class called bigRed that makes text large and red. If you want to apply it to a certain text, just put it in a tag surrounding that text. e.g. . . . but my <span class='bigRed' >car</span> was faster than . . .
The octothorpe or hash sign precedes the name of the ID attribute: HTML: <div id="sidebar"> CSS: #sidebar { color: red; }
CSS is a rule based language - you define rules specifying groups of styles that should be applied to particular elements or groups of elements on your web page. CSS can be added to HTML documents in 3 ways : Inline - by using the style attribute inside HTML elements. Internal - by using a element in the section. External - by using a element to link to an external CSS file.
The "id" attribute specifies a unique ID for an element:Ids must be unique within the page (so no other elements that are ided as "firstParagraphOfGreatness".)Ids can be referenced in CSS like so:#firstParagraphOfGreatness {css rules here}
The easy way is to add the :hover attribute to a CSS rule and put color: red; or somthing
An id attribute is a unique identifier assigned to a specific HTML element on a webpage. It is used to uniquely identify the element, making it easier to target and manipulate using CSS or JavaScript.
An ID in CSS is identified by the octothorpe symbol (#). An ID in CSS references the ID attribute in HTML and they should have the same name. For example lets say I have the following code in my HTML: <small id="copyright">Copyright &#169;2015 &#8212; David Trower. All Rights Reserved.</small> Notice the id="copyright" on the <small> element? That is the ID. In CSS, if I want to stylize this element by referencing that ID I would use the following CSS code: #copyright { color: #9CBDDE; } Notice how what follows the octothorpe (#) symbol in the CSS code is the same as the value of the ID attribute in HTML (both are the word copyright). An ID is to be a unique identifier within a document. It should appear once, and only once, within a single document.
HTML contains the content and CSS contains the formatting.