3列固定的页面布局

3.css

/* ------------------------------
HTML Redefine Tags
------------------------------ */
body{font-family:Arial, Helvetica, sans-serif; font-size:12px; margin:20px; padding:0;}

input, form, textarea
h1, h2, h3, h4, h5, h6{margin:0; padding:0;}
h1{font-size:18px;}
h2{font-size:14px; color:#999999;}
h3{font-size:13px; border-bottom:solid 1px #DEDEDE; padding:4px 0; margin-bottom:10px;}

a:link, a:visited{color:#0033CC;}
a:hover{text-decoration:none;}

/* ------------------------------
PAGE STRUCTURE
------------------------------ */

/* #container has an absolute width (780 pixel) */

#container{width:780px; margin:0 auto;}
#topbar{width:auto; display:block; height:60px;}
#navbar{width:auto; display:block; height:28px;}
#navbar a{heigth:28px; line-height:28px; padding:0 8px; display:inline;}

#main{width:auto; display:block; padding:10px 0;}
#column_left{width:460px; margin-right:20px; float:left;}
#column_right{width:160px; margin-right:20px; float:left;}
#column_right_adsense{width:120px; float:left;}
div.spacer{clear:both; height:10px; display:block;}

#footer{width:auto; display:block; padding:10px 0; font-size:11px; color:#666666;}

/* ------------------------------
CUSTOM CLASSES
------------------------------ */

/* Add here your custom classes ... */

3.html

  <div id="container">
    <div id="topbar">Top Bar/Logo Layer</div>
    <div id="navbar">
      <a href="index.html?home">Home</a>
      <a href="index.html?about">About</a>
      <a href="mailto:myemailaddres@email.com">Contact me</a>
    </div>
    <div id="main">
      <div id="column_left">
        <h1>Post Title</h1>
        <h2>12 january 2008</h2>
        <p>Add your text here</p>
      </div>
      <div id="column_right">
        <h3>Categories</h3>
        Right Content to add Categories, web 2 widget (twitter, mybloglog recent readers...)
      </div>
      <div id="column_right_adsense">
        <h3>AdSense</h3>
        Adsense 120 X 600
      </div>
      <!-- Don't remove spacer div. Solve an issue about container height -->
      <div class="spacer"></div>
    </div>
    <div id="footer">© 2008 Information about your site</div>
  </div>