HTML value Attribute - W3Schools
www.w3schools.com › tags › att_valueDefinition and Usage. For <button>, <input> and <option> elements, the value attribute specifies the initial value of the element. For <li> elements, the value attribute sets the value of the list item (for ordered lists). The next list items will increment from that value.
CSS Tutorial - W3Schools
www.w3schools.com › CssAt W3Schools you will find complete CSS references of all properties and selectors with syntax, examples, browser support, and more. CSS Properties. CSS Selectors. CSS Browser Support. CSS Functions. CSS Animatable. CSS Aural. CSS Web Safe Fonts. CSS Units.
JavaScript Tutorial - W3Schools
www.w3schools.com › JsW3Schools maintains a complete JavaScript reference, including all HTML and browser objects. The reference contains examples for all properties, methods and events, and is continuously updated according to the latest web standards.