fixed-table-layout-003e09.xht (4036B)
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-003e09-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 non-zero symetrical 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: 400px; 24 } 25 26 td {padding: 0px 24px;} 27 28 td#tested-cell 29 { 30 background-color: blue; 31 border-left: orange solid 0px; 32 border-right: orange solid 72px; 33 color: blue; 34 width: 80px; 35 } 36 37 div#reference 38 { 39 background-color: black; 40 color: black; 41 margin-left: 118px; 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 36px : half of border-left since such border must be split with cell in 1st column 59 + 60 24px : padding-left of the cell in the middle column 61 + 62 80px : width of the cell in the middle column 63 + 64 24px : padding-right of the cell in the middle column 65 ======= 66 164px : width of the middle column 67 68 69 So, 70 400px : table set width 71 - 72 164px : width of the middle column 73 ====== 74 236px 75 76 So, each of the 2 remaining columns must be 77 half of such extra horizontal table space, 78 which is 236px divided by 2 == 118px. 79 80 1st column width calculations 81 ----------------------------- 82 83 24px : padding-left of cell in 1st column 84 + 85 (solve) : width of cell in 1st column 86 + 87 24px : padding-right of cell in 1st column 88 ====== 89 118px : width of 1st column 90 91 So, the width of the cell in first column must be exactly 70px. 92 93 94 3rd column width calculations 95 ----------------------------- 96 97 36px : half of border-right of cell in middle column 98 since such border must be split with cell in 3rd column 99 + 100 24px : padding-left of cell in 3rd column 101 + 102 (solve) : width of cell in 3rd column 103 + 104 24px : padding-right of cell in 3rd column 105 ======= 106 118px : width of 3rd column 107 108 So, the width of the cell in 3rd column must be exactly 34px. 109 110 111 Finally, the precise horizontal point where the border-right of cell 112 in first column begins to be drawn, painted is: 113 114 24px : padding-left of cell in 1st column 115 + 116 70px : width of cell in 1st column 117 + 118 24px : padding-right of cell in 1st column 119 ======= 120 118px 121 122 Therefore the margin-left: 118px value of the div#reference. 123 124 */ 125 126 width: 200px; 127 } 128 ]]></style> 129 130 </head> 131 132 <body> 133 134 <p>Test passes if the blue stripe and orange stripe are as a whole <strong>exactly as wide as</strong> the black stripe.</p> 135 136 <table> 137 138 <col /> 139 <col /> 140 <col /> 141 142 <tr> 143 <td></td> 144 <td id="tested-cell">E09</td> 145 <td></td> 146 </tr> 147 148 </table> 149 150 <div id="reference">200px wide</div> 151 152 </body> 153 </html>