Border style do not work with sticky position element
I don't know why my border style do not work with position: sticky; attribute. I would like to set border styles on my sticky table header. But I don't want to use the transparent background colour. How can I achieve it? Here are sample codes for my problem and JSFiddle Link
#wrapper {
width: 400px;
height: 200px;
overflow: auto;
}
table {
width: 100%;
text-align: center;
border-collapse: collapse;
}
table tr th,
table tr td {
border: 2px solid;
}
table thead th {
position: -webkit-sticky;
position: sticky;
top: 0;
background-color: #edecec;
}<div id="wrapper">
<table>
<thead>
<tr>
<th>A</th>
<th>B</th>
<th>C</th>
<th>D</th>
<th>E</th>
</tr>
</thead>
<tr>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
</tr>
<tr>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
</tr>
<tr>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>7</td>
<td>7</td>
<td>7</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>8</td>
<td>8</td>
<td>8</td>
<td>8</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tbody>
</tbody>
</table>
</div>Below are screenshots for what I want and who do not clear enough my question.
You can see inline border styles of th do not work (remove position attribute of css and you will see boders around.).
After scroll down a little. You will see all border-styles were gone.
The problem occurs because of the use of border-collapse: collapse. When browsers collapse the borders, the top and bottom border on the <th> must be getting applied to surrounding elements—the top border to the <table> and the bottom border to the following <tr>.
If you use border-collapse: separate and fashion your borders to sit on one side, the borders will truly attach to the <th>, stay fixed as expected, and appear collapsed.
Here are example styles that can be applied to your HTML snippet.
#wrapper {
width: 400px;
height: 200px;
overflow: auto;
}
table {
width: 100%;
text-align: center;
border-collapse: separate; /* Don't collapse */
border-spacing: 0;
}
table th {
/* Apply both top and bottom borders to the <th> */
border-top: 2px solid;
border-bottom: 2px solid;
border-right: 2px solid;
}
table td {
/* For cells, apply the border to one of each side only (right but not left, bottom but not top) */
border-bottom: 2px solid;
border-right: 2px solid;
}
table th:first-child,
table td:first-child {
/* Apply a left border on the first <td> or <th> in a row */
border-left: 2px solid;
}
table thead th {
position: sticky;
top: 0;
background-color: #edecec;
}
You need to use box-shadow property instead of border-top/border-bottom. Additionally you need to delete top/bottom borders for the head and first row of table.
#wrapper {
width : 400px;
height : 200px;
overflow : auto;
}
table {
width : 100%;
text-align : center;
border-collapse : collapse;
}
table tr th, table tr td {
border : 2px solid;
}
table thead th {
position: -webkit-sticky;
position : sticky;
top : 0;
background-color : #edecec;
}
/* here is the trick */
table tbody:nth-of-type(1) tr:nth-of-type(1) td {
border-top: none !important;
}
table thead th {
border-top: none !important;
border-bottom: none !important;
box-shadow: inset 0 2px 0 #000000,
inset 0 -2px 0 #000000;
padding: 2px 0;
}
/* and one small fix for weird FF behavior, described in https://stackoverflow.com/questions/7517127/ */
table thead th {
background-clip: padding-box
}
<body>
<div id="wrapper">
<table>
<thead>
<tr>
<th>A</th>
<th>B</th>
<th>C</th>
<th>D</th>
<th>E</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
</tr>
<tr>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
</tr>
<tr>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>7</td>
<td>7</td>
<td>7</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>8</td>
<td>8</td>
<td>8</td>
<td>8</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
</tbody>
</table>
</div>
</body>Because sticky positioning fluctuates between relative and fixed, the only way I can think to circumvent this out-of-box would be take advantage of psuedo classes.
I'm sure there's a more elegant manner to accomplish this but I would just alter the :after and :before psuedo classes to provide the border with absolute positioning.
#wrapper {
width: 400px;
height: 200px;
overflow: auto;
}
table {
width: 100%;
text-align: center;
border-collapse: collapse;
}
table tr th,
table tr td {
border: 2px solid;
}
table thead th {
position: -webkit-sticky;
position: sticky;
top: -1px;
background-color: #edecec;
}
th:after,
th:before {
content: '';
position: absolute;
left: 0;
width: 100%;
}
th:before {
top: 0;
border-top: 3px solid blue;
}
th:after {
bottom: 0;
border-bottom: 3px solid blue;
}<div id="wrapper">
<table>
<thead>
<tr>
<th>A</th>
<th>B</th>
<th>C</th>
<th>D</th>
<th>E</th>
</tr>
</thead>
<tr>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
</tr>
<tr>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
</tr>
<tr>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>7</td>
<td>7</td>
<td>7</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>8</td>
<td>8</td>
<td>8</td>
<td>8</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tr>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
<td>9</td>
</tr>
<tbody>
</tbody>
</table>
</div><td style="position: sticky;
top: 0;
left: 0;
right: 0;
padding: 4px 3px;
background-color: #d3d3d3;
box-shadow: inset 0 1px 0 black, inset 0 -1px 0 black;">
</td>
use this 100% worked