aa 123.45 bb 12 cc 12345.0932 dd 1 HTML <table border="1"> <tbody> <tr> <td>aa</td> <td class="num i3">123.45</td> </tr> <tr> <td>bb</td> <td class="num i0">12</td> & … 続きを読む table要素 CSS 桁揃え