Reduce size of close button

Add the code below to Custom CSS field on your Popup widget’s Settings tab:

.global-styles, [class^="Icon__IconContainer-sc"] {
	width: 93% !important;
	height: 93% !important;
	top: 55%;
	left: 56.5%;
}

.global-styles, [class^="PopupCloseControl__PopupCloseControlContainer-sc"] {
	width: 25px;
	height: 25px;
}

You’re welcome to change the values in the code to adjust the button to your liking.