How do I change text size canvas kibana filter time
if you know the basis of html and css, you could tweak the text size by adding a custom css to the element, for example with adding:
.canvasRenderEl .euiDatePopoverButton{
font-size: 25px;
}
you will get this result:
However, it's quite easy to make it look bad when modifying internal kibana styles in some edge cases so if you choose to do it, remember to test your solution.