Change the Before and After text.
div[data-wm-plugin="before-after-slider"] {
--after-text: 'After';
--before-text: 'Before';
}
Change the Before and After Background Color & Font Color of the Captions
div.wm-before-after-slider {
--caption-before-background: orange;
--caption-before-color: black;
--caption-after-background: teal;
--caption-after-color: white;
}
Hide the Captions altogether.
div[data-wm-plugin="before-after-slider"] .caption {
display: none;
}