How to add scrollbar to table in CSS?

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HTML

CSS3

Hi,

I have div in that i have table, and I am adding table row using loop.
my div size is fixed, when in table more row added then scrollbar should be visible.


how to do this?
thanks

What I have tried:

<div style="overflow-x:auto!important;">
<table style="width:90%;" >
   <tr style="font-size:1.5em;"><td>Value</td><td>Time</td></tr>
      @foreach (var itemModel in item)
      {
         <tr style="font-size:1em;">
         <td>@itemModel.Value</td>
         <td>@itemModel.Timestamp</td>
         </tr>
                                            }
</table>
</div>