Harvard Extension School
CSCI E-12 Fundamentals of Web Site Development | Fall 2019

## Lists as Navigation

Nested list styled as "clamshell" navigation.

- remove list styling
- make "a" element "block" display

- styles for secondary nested lists (e.g. selector for `ul ul a`)
Example 6.10 - Nested lists for 'clamshell' navigation - Example 6.10 (Without Styles)

- Markup
- Style
- Screenshot

    <div id="navclam"><ul>
    <li><a href="http://big12sports.collegesports.com/">Big XII</a><ul>
    <li><a href="http://www.baylor.edu/">Baylor</a></li>
    <li><a href="http://www.iastate.edu/">Iowa State</a></li>
    <li><a href="http://www.ku.edu/">Kansas</a></li>
    <li><a href="http://www.ksu.edu/">Kansas State</a></li>
    <li><a href="http://www.ou.edu/">Oklahoma</a></li>
    <li><a href="http://www.okstate.edu/">Oklahoma State</a></li>
    <li><a href="http://www.tcu.edu/">Texas Christian</a></li>
    <li><a href="http://www.utexas.edu/">Texas</a></li>
    <li><a href="http://www.ttu.edu/">Texas Tech</a></li>
    <li><a href="http://www.wvu.edu/">West Virginia</a></li>
    </ul></li>
    <li><a href="http://www.ivyleaguesports.com/">Ivy League</a><ul class="collapse">
    <li><a href="http://www.brown.edu/">Brown</a></li>
    <li><a href="http://www.columbia.edu/">Columbia</a></li>
    <li><a href="http://www.cornell.edu/">Cornell</a></li>
    <li><a href="http://www.dartmouth.edu/">Dartmouth</a></li>
    <li><a href="http://www.harvard.edu/">Harvard</a></li>
    <li><a href="http://www.upenn.edu/">Penn</a></li>
    <li><a href="http://www.princeton.edu/">Princeton</a></li>
    <li><a href="http://www.yale.edu/">Yale</a></li>
    </ul></li>
    <li><a href="http://www.pac-12.com/">Pac 12</a><ul class="collapse">
    <li><a href="http://www.arizona.edu/">Arizona</a></li>
    <li><a href="http://www.asu.edu/">Arizona State</a></li>
    <li><a href="http://www.berkeley.edu/">California</a></li>
    <li><a href="http://www.cu.edu/">Colorado</a></li>
    <li><a href="http://www.uoregon.edu/">Oregon</a></li>
    <li><a href="http://www.oregonstate.edu/">Oregon State</a></li>
    <li><a href="http://www.stanford.edu/">Stanford</a></li>
    <li><a href="http://www.ucla.edu/">UCLA</a></li>
    <li><a href="http://www.usc.edu/">USC</a></li>
    <li><a href="http://www.utah.edu/">Utah</a></li>
    <li><a href="http://www.washington.edu/">Washington</a></li>
    <li><a href="http://www.wsu.edu/">Washington State</a></li>
    </ul></li>
    </ul></div>

In `head` element:

    <link rel="stylesheet" type="text/css" href="example10.css"/>

In example10.css

    #navclam {
      font-family: Arial, Verdana, Helvetica, sans-serif;
      font-weight: bold;
      font-size: 1.2em;
      width: 10em;
      border-right: 1px solid #333;
      margin-bottom: 1em;
      background-color: #ddd;
      color: #900;
    }
    #navclam ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    #navclam ul li {
      margin: 0;
      border-top: 1px none #333;
    }
    #navclam ul li a {
      display: block;
      background-color: #ccc;
      border-top: 1px none #333;
      border-right: 1px solid #333;
      border-bottom: thin dotted #333;
      border-left: 5px solid #333;
      text-decoration: none;
      padding: 5px 2px 5px 0.5em;
    }
    #navclam a:link {
      color: #900;
    }
    #navclam a:visited {
      color: #900;
    }
    #navclam a:hover {
      color: #fff;
      background-color: #900;
      border-top: 1px outset #333;
      border-right: 1px outset #333;
      border-bottom: 1px outset #333;
      border-left: 5px outset #333;
    }
    #navclam a:active {
      color: #fff;
      background-color: #900;
      border-top: 1px inset #333;
      border-right: 1px inset #333;
      border-bottom: 1px inset #333;
      border-left: 5px inset #333;
    }
    #navclam ul ul a {
      list-style: none;
      padding-left: 1.5em;
      font-size: 90%;
      font-weight: normal;
    }
    #navclam ul.collapse {
      display: none;
    }

Default styling of nested list:

Copyright © David Heitmeyer