Technologies for web publishing

Ing. Václav Freylich

Lecture 6

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Content

CSS layouts Flexible three column layout

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What is the idea?

We want to create the layout with two fixed side columns and one fexible column in the centre.

When resize the window the content box size is changed. The header and footer width is changed. The side boxes aren’t changed

Menu

Header

Submenu,voting, news, …

Footer

Main content box

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Four possible situations

1)

3)

2)

4)

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Four possible situations

1) and 2)One of the sidebars is longer than the content box

3)Content box is longer than sidebars

4)Content box is shorter than sidebars

In all described situations we need to keep the footer at the bottom!

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Solution - the floating boxes

1. Mark the boxes with numbers (numbers are the order of boxes in HTML code)

2. The order of the boxes 2 – 4 – 3 is important !3. Boxes 2 and 3 are floating !

2

1

3

5

4

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HTML code

Put the boxes into the HTML code according their order

<div id=“layout”><div id=“header”>Header text</div><div id=“menu”>Menu items</div><div id=“right”>Voting, news, …</div><div id=“content”>Main content</div><div id=“footer”>Footer content</div>

</div>

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CSS style

Create the CSS style definitions

#header { width: 100%; height: 50px; background-color: blue;}

#menu { width: 150px; height: 350px; background-color: red;float: left; }

#right { width: 150px; height: 250px; background-color: yellow;float: right; }

#content {color: red;}

#footer {clear: both; background-color: green;}