fixed-table-layout-003f06.xht (3500B)
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 3 <html xmlns="http://www.w3.org/1999/xhtml"> 4 5 <head> 6 7 <title>CSS Test: table-layout: fixed - cell in the first row with specified width</title> 8 9 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> 10 <link rel="help" href="http://www.w3.org/TR/CSS21/tables.html#fixed-table-layout" /> 11 <link rel="bookmark" href="http://lists.w3.org/Archives/Public/www-style/2011Oct/0502.html" title="[css21] Section 17.5.2.1 should be clarified" /> 12 <link rel="match" href="fixed-table-layout-003f06-ref.xht" /> 13 14 <meta name="assert" content="A cell in the first row with specified non-auto 'width' sets the width for its column in the absence of a column element with specified non-auto width. This test checks the 'border-collapse: collapse' model with zero horizontal cell padding and with one non-zero horizontal cell border." /> 15 16 <style type="text/css"><![CDATA[ 17 div, table {font: 1.25em/1.2 serif;} 18 19 table 20 { 21 border-collapse: collapse; 22 table-layout: fixed; 23 width: 300px; 24 } 25 26 td {padding: 0px;} 27 28 td#tested-cell 29 { 30 background-color: blue; 31 border-left: orange solid 120px; 32 border-right: orange solid 0px; 33 color: blue; 34 width: 80px; 35 } 36 37 div#reference 38 { 39 background-color: black; 40 color: black; 41 margin-left: 20px; 42 43 /* 44 45 " 46 In the fixed table layout algorithm, the width of each column is determined as follows: 47 48 (...) a cell in the first row with a value other than 'auto' for the 'width' property determines the width for that column. (...) 49 Any remaining columns equally divide the remaining horizontal table space (minus borders or cell spacing). 50 " 51 Section 17.5.2.1 Fixed table layout 52 http://www.w3.org/TR/CSS21/tables.html#fixed-table-layout 53 54 55 Middle column width calculations 56 -------------------------------- 57 58 60px : half of border-left since such border must be split with cell in 3rd column 59 + 60 80px : width of cell in the middle column 61 ======= 62 140px : width of the middle column 63 64 65 So, 66 300px : table set width 67 - 68 140px : width of the middle column 69 ======= 70 160px 71 72 So, each of the 2 remaining columns must be 73 half of such extra horizontal table space, 74 which is 160px divided by 2 == 80px. 75 76 1st column width calculations 77 ----------------------------- 78 79 60px : border-left since such border must be split with cell in middle column 80 + 81 (solve) : width of cell in 1st column 82 ======= 83 80px : width of 1st column 84 85 So, the width of the cell in first column must be exactly 20px. 86 87 88 3rd column width calculations 89 ----------------------------- 90 (solve) : width of cell in 3rd column 91 ======== 92 80px : width of 3rd column 93 94 So, the width of the cell in 3rd column must be exactly 80px. 95 96 97 Finally, the precise horizontal point where the border-right of cell 98 in first column begins to be drawn, painted is: 99 100 20px : width of cell in 1st column 101 102 Therefore the margin-left: 20px value of the div#reference. 103 104 */ 105 106 width: 200px; 107 } 108 ]]></style> 109 110 </head> 111 112 <body> 113 114 <p>Test passes if the orange stripe and blue stripe are as a whole <strong>exactly as wide as</strong> the black stripe.</p> 115 116 <table> 117 118 <col /> 119 <col /> 120 <col /> 121 122 <tr> 123 <td></td> 124 <td id="tested-cell">F06</td> 125 <td></td> 126 </tr> 127 128 </table> 129 130 <div id="reference">200px wide</div> 131 132 </body> 133 </html>