How Can I Create a Horizontal Dropdown Menu Using Only CSS?

Creating Horizontal Dropdown Menus Purely with CSS

Horizontal dropdown menus offer an easy-to-navigate experience by allowing users to hover over a primary menu item to reveal sub-menus. Achieving this effect purely with CSS requires some styling prowess.

HTML Structure:

Start by creating an unordered list (

) with
• elements for each menu item. Sub-menus are represented by nested
  elements.

  CSS Styling:

  • Positioning: Set the outer
    element to display as a block and add floating left to the
    • elements to create a horizontal layout.
    • Sub-Menu Visibility: Initially, hide the sub-menus by setting their display to none.

    • Menu Item Styles:

      • Define background color, padding, text color, and border for menu items.

    • Hover Effects:

      • Add background color changes on hover for menu items.
      • Unhide sub-menus on hover by setting their display to block and positioning them absolutely.

    • Responsive Sub-Menus:

      • Reduce the font size of sub-menu items on hover for easier readablity.
      • Add background color changes to sub-menu items on hover.

    Example Code:

    ul {
      font-family: Arial, Verdana;
      font-size: 14px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    
    ul li {
      display: block;
      position: relative;
      float: left;
    }
    
    li ul {
      display: none;
    }
    
    ul li a {
      display: block;
      text-decoration: none;
      color: #ffffff;
      border-top: 1px solid #ffffff;
      padding: 5px 15px 5px 15px;
      background: #2C5463;
      margin-left: 1px;
      white-space: nowrap;
    }
    
    ul li a:hover {
      background: #617F8A;
    }
    
    li:hover ul {
      display: block;
      position: absolute;
    }
    
    li:hover li {
      float: none;
      font-size: 11px;
    }
    
    li:hover a {
      background: #617F8A;
    }
    
    li:hover li a:hover {
      background: #95A9B1;
    }

    Live Demo:
    [Pure CSS Horizontal Dropdown Menu](http://jsfiddle.net/XPE3w/7/)

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