Eliminate the margin and padding on a floating table header

After scrolling, I am attempting to position the thead element. However, when changing the position from static to absolute, the element becomes offset with added margin and padding. This has led me to try using CSS to address the issue:

To resolve this, I have utilized the following CSS:

<thead id='tableHeader' style="margin:0;border:0;padding:0;">
</thead>

My goal is to eliminate the margin and padding in order to maintain the original dimensions of the table header (1871 * 37).

Answer №1

Adding position:absolute to the thead element can cause it to lose its context within the table. This is because it is removed from the document flow. Without the table to provide context, the thead may size itself unpredictably. One way to address this is by specifying a width when applying position: absolute;. For example, you can add:

width: 1759px; /* Or adjust to match your table width */ 

If you have dynamically sized tables and encounter sizing issues, you can use jQuery to set the width like this:

 $('#tableHeader').width($('table#tableID').width()), 

Alternatively, if you are not using jQuery, you can achieve the same result using pure JavaScript:

 document.querySelector('#tableHeader').style.width = document.querySelector('table#tableID').style.width;

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