CSS gradient border - irregular shape

Do we have CSS masters here? https://stackoverflow.com/questions/75890709/gradient-border-on-irregular-shape-with-pseudo-element

Stack Overflow

Gradient border on irregular shape with pseudo element

Is it possible to achieve something like this using CSS? I mean a gradient-border combined with a pseudo-element (tick) at the bottom. At the moment I only made a gradient... .white-grad {