How can I set the size of the popup?
I would like the popup to be for example 400px
and the elements inside will then adapt to the size of the popup

Something like this:

The element that a css class must have for this problem I think is k-popup

Hello Alex,

In order to change the width of the tooltip in the Kendo UI Chart, use the following CSS snippet:

.k-popup .k-chart-tooltip {
  width: 400px;
}

In this StackBlitz example, the tooltip content adapts to the size of the tooltip in the Kendo UI Chart. Please make sure to set the encapsulation to ViewEncapsulation.None to set the style locally.

I hope this helps. Please let me know if I can further assist you.

Regards,
Hetali
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