W3.CSS Dropdown Last Updated : 02 Mar, 2021 Comments Improve Suggest changes Like Article Like Report Dropdowns are one of the most important parts of an interactive website. A dropdown menu is the collection of menu items that allow users to choose a value from the list. W3.CSS also provides classes to make a smooth and responsive dropdown menu. There are two types of dropdown menu available i.e. hoverable and clickable. The classes available for dropdown are as follows: Sr. No. Class Name Description 1. w3-dropdown-content It is used to make the content of the dropdown menu. 2. w3-dropdown-hover It is used to make a hoverable dropdown element. 3. w3-dropdown-click It is used to make a clickable dropdown menu. Example: Creating a hoverable dropdown menu. HTML <!DOCTYPE html> <html> <head> <!-- Adding W3.CSS file through external link --> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> </head> <body> <!-- w3-container is used to add 16px padding to any HTML element. --> <!-- w3-center is used to set the content of the element to the center. --> <div class="w3-container w3-center"> <!-- w3-text-green sets the text colour to green. --> <!-- w3-xxlarge sets font size to 32px. --> <h2 class="w3-text-green w3-xxlarge">GeeksForGeeks</h2> </div> <!-- Hoverable Dropdown Menu in W3.CSS --> <div class="w3-container w3-center"> <!-- Hoverable Dropdown Menu --> <div class="w3-dropdown-hover w3-round-large"> <button class= "w3-button w3-hover-blue w3-pink w3-round-large"> Hover Over Me! </button> <div class="w3-dropdown-content w3-bar-block w3-border"> <a href="#" class="w3-bar-item w3-button"> Gfg </a> <a href="#" class="w3-bar-item w3-button"> GeeksForGeeks </a> <a href="#" class="w3-bar-item w3-button"> Geek </a> </div> </div> </div> </body> </html> Output: Before Hover:After Hover:Example: Creating a clickable dropdown menu. HTML <!DOCTYPE html> <html> <head> <!-- Adding W3.CSS file through external link --> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> <!-- Function to show and hide dropdown menu --> <script> function show() { var x = document.getElementById("gfg"); if (x.className.indexOf("w3-show") == -1) { x.className += " w3-show"; } else { x.className = x.className.replace(" w3-show", ""); } } </script> </head> <body> <!-- w3-container is used to add 16px padding to any HTML element. --> <!-- w3-center is used to set the content of the element to the center. --> <div class="w3-container w3-center"> <!-- w3-text-green sets the text color to green. --> <!-- w3-xxlarge sets font size to 32px. --> <h2 class="w3-text-green w3-xxlarge"> GeeksForGeeks </h2> </div> <!-- Hoverable Dropdown Menu in W3.CSS --> <div class="w3-container w3-center"> <!-- Hoverable Dropdown Menu --> <div class="w3-dropdown-click w3-round-large"> <button onclick = "show()" class="w3-button w3-blue w3-round-large"> Click Me! </button> <div id="gfg" class="w3-dropdown-content w3-bar-block w3-border"> <a href="#" class="w3-bar-item w3-button">Gfg</a> <a href="#" class="w3-bar-item w3-button"> GeeksForGeeks </a> <a href="#" class="w3-bar-item w3-button">Geek</a> </div> </div> </div> </body> </html> Output: Before Click:After Click: Comment More infoAdvertise with us Next Article CSS Introduction A aditya_taparia Follow Improve Article Tags : CSS W3.CSS Similar Reads CSS Tutorial CSS stands for Cascading Style Sheets. It is a stylesheet language used to style and enhance website presentation. CSS is one of the three main components of a webpage, along with HTML and JavaScript.HTML adds Structure to a web page.JavaScript adds logic to it and CSS makes it visually appealing or 7 min read CSS Introduction CSS (Cascading Style Sheets) is a language designed to simplify the process of making web pages presentable.It allows you to apply styles to HTML documents by prescribing colors, fonts, spacing, and positioning.The main advantages are the separation of content (in HTML) and styling (in CSS) and the 4 min read CSS Syntax CSS is written as a rule set, which consists of a selector and a declaration block. The basic syntax of CSS is as follows:The selector is a targeted HTML element or elements to which we have to apply styling.The Declaration Block or " { } " is a block in which we write our CSS.HTML<html> <h 2 min read CSS Selectors CSS Selectors are used to target HTML elements on your pages, allowing you to apply styles based on their ID, class, type attributes, and more. There are mainly 5 types of selectors.Basic CSS Selectors: These are used to target elements by tag, .class, or # ID for fundamental styling needs.Combinato 7 min read CSS Comments CSS comments are used to add notes or explanations to your code, helping you and others understand it better. They start with /* and end with */ and can be used for both single-line and multi-line comments. Note: Comments are ignored by browsers, so they won’t affect how your webpage looks or works. 2 min read CSS Colors CSS colors are used to set the color of different parts of a webpage, like text, background, and borders. This helps make the page look more attractive and easier to read. You can define colors using names, hex codes, RGB values, and more.You can try different formats of colors here- #content-iframe 5 min read CSS Borders Borders in CSS are used to create a visible outline around an element. They can be customized in terms ofWidth: The thickness of the border.Style: The appearance of the border (solid, dashed, dotted, etc.).Color: The color of the border.You can try different types of borders here- #custom-iframe{ he 5 min read CSS Margins CSS margins are used to create space around an element, separating it from neighboring elements and the edges of the webpage. They control the layout by adjusting the distance between elements, providing better organization and readability.Syntax:body { margin: value;}HTML<html> <head> 4 min read CSS Height and Width Height and Width in CSS are used to set the height and width of boxes. Their values can be set using length, percentage, or auto.Width and HeightThe width and height properties in CSS are used to define the dimensions of an element. The values can be set in various units, such as pixels (px), centim 4 min read CSS Outline CSS outline is a property used to draw a line around an element's border. It does not affect the layout, unlike borders. It's often used to highlight elements, providing a visual emphasis without altering the dimensions of the element.Syntaxselector{ outline: outline-width outline-type outline-color 4 min read Like