GRUPO
DE TABELA HTML5
<colgroup> elemento usado como contêiner para coluna.
<col> especifica cada grupo.
Span é m atributo para especificar
quantas colunas.
Style é o que vai colocar cor de fundo na coluna que especifiquei
no span atributo.
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
</style>
</head>
<body>
<h2>grupo de tabela</h2>
<table style="width: 100%;">
<colgroup>
<col span="3"
style="background-color: #D6EEbb">
</colgroup>
<tr>
<th>Domingo</th>
<th>Segunda</th>
<th>Terça</th>
<th>Quarta</th>
<th>Quinta</th>
<th>Sexta</th>
<th> Sábado</th>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
<td>13</td>
<td>14</td>
</tr>
<tr>
<td>15</td>
<td>16</td>
<td>17</td>
<td>18</td>
<td>19</td>
<td>20</td>
<td>21</td>
</tr>
</table>
</body>
</html>
OBSERVAÇÃO:
<colgroup> É UMA TAG FILHA DO TABLE ELEMENTO, MAS OS
OUTROS ELEMENTO DA TABELA DEVE SER <colgroup> E ANTES: <th>, <tr>, <td>
E DEPOIS <caption> elemento.
Cor de fundo em
diferentes elementos da tabela
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
</style>
</head>
<body>
<h2>grupo de tabela</h2>
<table style="width: 100%;">
<colgroup>
<col
span="2" style="background-color: #D6EEEE">
<col
span="3" style="background-color: pink">
</colgroup>
<tr>
<th>Domingo</th>
<th>Segunda</th>
<th>Terça</th>
<th>Quarta</th>
<th>Quinta</th>
<th>Sexta</th>
<th> Sábado</th>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
<td>13</td>
<td>14</td>
</tr>
<tr>
<td>15</td>
<td>16</td>
<td>17</td>
<td>18</td>
<td>19</td>
<td>20</td>
<td>21</td>
</tr>
</table>
</body>
</html>
Grupos vazios
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
</style>
</head>
<body>
<h2>grupo de tabela</h2>
<table style="width: 100%;">
<colgroup>
<col
span="3">
<col span="2"
style="background-color: pink">
</colgroup>
<tr>
<th>Domingo</th>
<th>Segunda</th>
<th>Terça</th>
<th>Quarta</th>
<th>Quinta</th>
<th>Sexta</th>
<th> Sábado</th>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
<td>13</td>
<td>14</td>
</tr>
<tr>
<td>15</td>
<td>16</td>
<td>17</td>
<td>18</td>
<td>19</td>
<td>20</td>
<td>21</td>
</tr>
</table>
</body>
</html>
Ocultar colunas
visibility: colapse para ocultar colunas.
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
</style>
</head>
<body>
<h2>grupo de tabela</h2>
<table style="width: 100%;">
<colgroup>
<col
span="2">
<col
span="3" style="visibility: collapse">
</colgroup>
<tr>
<th>Domingo</th>
<th>Segunda</th>
<th>Terça</th>
<th>Quarta</th>
<th>Quinta</th>
<th>Sexta</th>
<th> Sábado</th>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
<td>13</td>
<td>14</td>
</tr>
<tr>
<td>15</td>
<td>16</td>
<td>17</td>
<td>18</td>
<td>19</td>
<td>20</td>
<td>21</td>
</tr>
</table>
</body>
</html>