The fixed table header is misaligned with the body columns' width

I was looking for a way to add a vertical scrollbar to my table, and I ended up wrapping the entire table in a div. The result was that the table head was fixed in position. Is there a simpler method to include a scrollbar in a table without affecting the width of the table while keeping it centered on the page?

thead, tr, th, td, tbody{
border: 1px solid;
text-align: center;
padding: 3px;

}

th{
background-color:#99ccff;
height: 40px;
font-size: 20px;

}

tr{
width: 500%;
height: 20px;
font-size: 17px;
}

tr:nth-child(even) {
background-color: #CCFFFF;
}
tr:nth-child(odd) {
background-color: #fae8d1;
}

thead{
position: fixed;
width: 1200px;
}
.tbldiv{
width: 1200px;
height: 600px;
border: 2px solid;
overflow: auto;
}
<div class="tbldiv">
<table class="scroll">
<thead>
<tr>
<th class="col-md-2">Name</th>
<th class="col-md-2">Birthday</th>
<th class="col-md-2">Gender</th>
<th class="col-md-2">Marital</th>
<th class="col-md-2">Address</th>
<th class="col-md-2">Telephone</th>
<th class="col-md-2">Email</th>
</tr>
</thead>
<tbody>
<tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
</tbody>
</table>
</div>

Answer №1

Give this code a shot

Replace position with translate

$(".tbldiv").scroll(function(){
  var translate = "translate(0," + this.scrollTop + "px)";
  $('thead').css('transform',translate);
});
thead, tr, th, td, tbody{
border: 1px solid;
text-align: center;
padding: 3px;

}
table.scroll {
    table-layout: fixed;
}
th{
background-color:#99ccff;
height: 40px;
font-size: 20px;

}

tr{
width: 500%;
height: 20px;
font-size: 17px;
}

tr:nth-child(even) {
background-color: #CCFFFF;
}
tr:nth-child(odd) {
background-color: #fae8d1;
}

.tbldiv{
float:left;
height: 200px;
border: 2px solid;
overflow: auto;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.1/jquery.min.js"></script>
<div class="tbldiv">
<table class="scroll">
<thead>
<tr>
<th class="col-md-2">Name</th>
<th class="col-md-2">Birthday</th>
<th class="col-md-2">Gender</th>
<th class="col-md-2">Marital</th>
<th class="col-md-2">Address</th>
<th class="col-md-2">Telephone</th>
<th class="col-md-2">Email</th>
</tr>
</thead>
<tbody>
<tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
<td>Some Data</td>
</tr>
      <tr>
<td>Some Data</td>
<td>Some Data</td>
...
</tbody>
</table>
</div>

Answer №2

You have the ability to achieve this with CSS.

.table-container {
    height: 10em;
}
table {
    display: flex;
    flex-flow: column;
    height: 100%;
    width: 100%;
}
table thead {
    /* head takes the height it requires, 
    and it's not scaled when table is resized */
    flex: 0 0 auto;
    width: calc(100% - 0.9em);
}
table tbody {
    /* body takes all the remaining available space */
    flex: 1 1 auto;
    display: block;
    overflow-y: scroll;
}
table tbody tr {
    width: 100%;
}
table thead,
table tbody tr {
    display: table;
    table-layout: fixed;
}
/* decorations */
.table-container {
    border: 1px solid black;
    padding: 0.3em;
}
table {
    border: 1px solid lightgrey;
}
table td, table th {
    padding: 0.3em;
    border: 1px solid lightgrey;
}
table th {
    border: 1px solid grey;
}
<div class="table-container">
    <table>
        <thead>
            <tr>
                <th>head1</th>
                <th>head2</th>
                <th>head3</th>
                <th>head4</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>content1</td>
                <td>content2</td>
                <td>content3</td>
                <td>content4</td>
            </tr>
            <tr>
                <td>content1</td>
                <td>content2</td>
                <td>content3</td>
                <td>content4</td>
            </tr>
            <tr>
                <td>content1</td>
                <td>content2</td>
                <td>content3</td>
                <td>content4</td>
            </tr>
            <tr>
                <td>content1</td>
                <td>content2</td>
                <td>content3</td>
                <td>content4</td>
            </tr>
            <tr>
                <td>content1</td>
                <td>content2</td>
                <td>content3</td>
                <td>content4</td>
            </tr>
            <tr>
                <td>content1</td>
                <td>content2</td>
                <td>content3</td>
                <td>content4</td>
            </tr>
        </tbody>
    </table>
</div>

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