How can I change the style of a Pop-Up?
You can change the look of a Pop-Up by editing its HTML with inline styles. For example, to make the width of a click Pop-Up 150px you can choose initial settings in the POP-UP HOVER panel with it’s toggle set to Values, then click on the toggle to change it to HTML. Add a style attribute to the first div, and use it to define a 150 pixel maximum width as shown below.
<div class="CDB-infowindow CDB-infowindow--light js-infowindow" style="max-width:150px">
Please note that scripts should not be included in the HTML panel.