Expand/Collapse Widget Demonstration

HTML (HyperText Markup Language) is the standard markup language for creating web pages. It provides the structure and semantic meaning of web content through a system of tags and attributes.

<!DOCTYPE html>
<html>
<head>
</head>
<body>
</body>
</html>

CSS (Cascading Style Sheets) is used to style and layout web pages. Key features include:

  • Selectors and properties for styling
  • Responsive design with media queries
  • Flexbox and Grid layouts
  • Animations and transitions
  • Cascading and inheritance

JavaScript is a versatile programming language that enables interactive web pages. It can be used for:

  • DOM manipulation
  • Event handling
  • Form validation
  • Asynchronous operations
  • Building single-page applications

Responsive web design ensures that websites work well on all devices and screen sizes. This approach includes:

@media (max-width: 768px) {
  .container {
    width: 100%;
  }
}

Using flexible grids, flexible images, and media queries, developers can create interfaces that adapt seamlessly to different devices.