Current page number field not large enough for large tables

[DrGFreeman]

The changes implemented in relation to #580 are great for large tables. However, the field displaying the current page number is not large enough for and does not adapt to large page numbers as in the example below:

dash_table 4.4.0, Chrome.

Update: This happens only when using the stylesheet used in the user guide examples ('https://codepen.io/chriddyp/pen/bWLwgP.css').

Adding the following css fixes it:

input.current-page {
  box-sizing: unset;
  height: 20px;
  margin: 0px;
  padding: 0px;
}

It may be good to add something similar in the stylesheet from the user guide as many users may be using is as-is.