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Layout using CSS

Layout using CSS. Using multiple classes. In the head: <style type="text/css" > .important {font-style:italic;} .title {color:red;} </style> In the body: <p class="title important" >Here's a type of paragraph that is intended to be displayed in italic.</p>. The goal. Part 1 : Layout.

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Layout using CSS

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  1. Layout using CSS

  2. Using multiple classes In the head: <style type="text/css" > .important{font-style:italic;} .title{color:red;} </style> In the body: <p class="title important">Here's a type of paragraph that is intended to be displayed in italic.</p>

  3. The goal

  4. Part 1: Layout

  5. The concept • Use <div> tags to structure the blocks of the page. (content) • Define a style for <div> tags to achieve the desired output. (presentation)

  6. 1. Basic properties • width (default is 100%) • padding (ex: padding: 10px;) • background (ex: background: #ffffff;) • etc

  7. 2. Floating elements • Enables blocks to be aligned • Property: • float: left; • float: right; • float: none;

  8. 2. Floating elements, example • Three divs in a page, with following style: div.title{ float:left; border:1px solid gray; padding:10px; } Output: layoutb.html

  9. 2. Floating elements, example • Three divs in a page, with following style: div.title{ width:200px; float:left; border:1px solid gray; padding:10px; } Output: layoutc.html

  10. 3. Positioning • Elements can be positioned at any coordinates in the page • Property: • position: static; • position: relative; • position: absolute;

  11. Positioning example • Three divs in a page, with following style: div.title{ width:200px; position: absolute; top: [100,200,300]px; left: [100,200,300]px; border:1px solid gray; padding:10px; } Output: layoutd.html

  12. 1. no layout <body> <h1>Page Title</h1> <p>This is the first block.</p> <p>This is still the first block.</p> <p>This is the second block.</p> </body> layout1.html

  13. Output

  14. 2. Three sections (1) <body> <div> <h1>Page Title</h1> </div> ... </body>

  15. 2. Three sections (2) <body> ... <div> <p>This is the first block</p> <p>This is still the first block.</p> </div> ... </body>

  16. 2. Three sections (3) <body> ... <div> <p>This is the second block.</p> </div> </body>

  17. Output

  18. 2. Three “typed” sections (1) <body> <div class=”title”> <h1>Page Title</h1> </div> ... </body>

  19. 2. Three sections (2) <body> ... <div class=”part1”> <p>This is the first block</p> <p>This is still the first block.</p> </div> ... </body>

  20. 2. Three sections (3) <body> ... <div class=”part2”> <p>This is the second block.</p> </div> </body>

  21. Output

  22. 3. Writing a style (1) <style> div.title{ border:1px solid gray; padding:10px; } ... </style>

  23. 3. Writing a style (2) <style> ... div.part1{ border:1px solid gray; padding:10px; } ... </style>

  24. 3. Writing a style (3) <style> ... div.part2{ border:1px solid gray; padding:10px; } </style> layout2.html

  25. Output

  26. 4. Two column layout v1 - right column has variable width

  27. 4. Two column layout v1

  28. 4. Two column layout v1 (1) <style> div.title{ border:1px solid gray; padding:10px; } ... </style>

  29. 4. Two column layout v1 (2) <style> ... div.part1{ float: left; width:200px; border:1px solid gray; padding:10px; } ... </style>

  30. 4. Two column layout v1 (3) <style> ... div.part2{ margin-left:222px; border:1px solid gray; padding:10px; } </style>

  31. Output • As required • Right column has variable width • layout2col1.html

  32. 5. Two column layout v2 – left column has variable size

  33. 5. Two column layout v2

  34. 5. Two column layout v2 (1) <style> div.title{ border:1px solid gray; padding:10px; } ... </style>

  35. 5. Two column layout v2 (2) <style> ... div.part1{ margin-right:222px; border:1px solid gray; padding:10px; } ... </style>

  36. 5. Two column layout v2 (3) <style> ... div.part2{ float:right; width:200px; border:1px solid gray; padding:10px; } </style>

  37. Output • As required • Left column has variable width • In Body of document, part1 and part2 have been swapped, otherwise doesn't work • At home, try to swap them back and see what happens ... • There's a way to make the layout work without swapping. See three column example further on ... • layout2col2.html

  38. 6. Three column layout v1 – Right column has variable width

  39. 6. Three column layout v1

  40. 6. Change in the document body <body> <div class=”part1”>...</div> <div class=”part3”>...</div> <div class=”part2”>...</div> </body> layout3col1.html

  41. 6. Threecolumn layout v1 (1) <style> ... div.part1{ float: left; width:200px; border:1px solid gray; padding:10px; } ... </style>

  42. 6. Three column layout v1 (2) <style> ... div.part3{ float: left; width:200px; border:1px solid gray; padding:10px; } ... </style>

  43. 6. Two column layout v1 (3) <style> ... div.part2{ margin-left:444px; border:1px solid gray; padding:10px; } </style>

  44. 8. Three column layout v3 – All three columns have variable widths

  45. 8. Three column layout v3

  46. 8. Threecolumn layout v3 (1) <style> ... div.part1 { float: left; width:20%; border:1px solid gray; } ... </style> layout3col3.html

  47. 8. Three column layout v3 (2) <style> ... div.part3 { float:left; width:58%; border:1px solid gray; } ... </style>

  48. 8. Three column layout v3 (3) <style> ... div.part2 { float:left; width:20%; background:#ffffff; border:1px solid gray; } </style>

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