Hello, Peter,
You can add the next code in Custom CSS for page area:
.vc_tta-container .vc_tta-tabs-position-top .vc_tta-tabs-list {
border-bottom: 1px solid #eee;
margin-bottom: 1.5em;
}
.wpb-js-composer .vc_tta-container .vc_tta-color-grey.vc_tta-style-classic .vc_tta-tab a {
border-bottom: 1px solid transparent !important;
line-height: 1em;
margin-bottom: 0;
padding: 1.001em 0 !important;
margin-right: 1.5em;
}
.wpb-js-composer .vc_tta-container .vc_tta-color-grey.vc_tta-style-classic .vc_tta-tab a:hover, .wpb-js-composer .vc_tta-container .vc_tta-color-grey.vc_tta-style-classic .vc_tta-tab.vc_active>a {
color: #1071b6;
}
.wpb-js-composer .vc_tta-container .vc_tta-color-grey.vc_tta-style-classic .vc_tta-tab a:hover, .wpb-js-composer .vc_tta-container .vc_tta-color-grey.vc_tta-style-classic .vc_tta-tab.vc_active>a {
border-color: #1071b6 !important;
}
https://prnt.sc/OKRMdNfQ05MV
Please note that such additional customization is outside the scope of our basic support.
Kind Regards,
8theme team