Hi Ociel,
As you mentioned by your testing, this is a problem coming from your “Smartbox Clean & Elegant” theme, so to fully resolve this issue, you’ll need to contact the theme support team for help with this.
However, one way to get you started to hopefully get things a little better is to try adding the following CSS to the bottom of your theme’s style.css file:
.datepicker-dropdown {
background: #fff !important;
margin-left: 8% !important;
width: auto !important;
}
Let us know if this helps – although still, to fix this issue your best course of action is to contact your theme provider’s support team.
Thanks!
George