cytropics Addressing the issue being specifically seen for standard responsive screen sizes, You may add some media query css in custom.css in order to show tab to be positioned right. Majorly, H2 Item-title font-size can be changed appropriately for certain breakpoints which is pushing the tab downwards:
@media only screen and (min-device-width: 320px) and (max-device-width: 480px) {.acm-slideshow .owl-carousel .item .slider-content .item-title{font-size: 23px !important;/* adjust value accordingly */}}
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {.acm-slideshow .owl-carousel .item .slider-content .item-title{font-size: 52px !important;margin-top: -2em !important;}}
@media only screen and (min-device-width: 1024px) {.acm-slideshow .owl-carousel .item .slider-content .item-title{margin-top: -2em !important;}}
Kindly ensure to clear your browser cache if changes dont reflect