.upload-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    height: 40px;
    padding: 0 8px 8px;
}

.start-upload-cta {
    min-width: 128px;
    position: relative;
    overflow: visible;
    isolation: isolate;
    font-weight: bold;
}

.start-upload-cta.is-current-step {
    animation: start-ready-rainbow-breathe 1150ms ease-in-out infinite;
    box-shadow: inset -1px -1px 0 #808080, inset 1px 1px 0 #dfdfdf, 0 0 0 1px #000000;
}

.start-upload-cta.is-current-step::after {
    content: "";
    position: absolute;
    inset: -4px;
    pointer-events: none;
    z-index: 1;
    padding: 4px;
    background: linear-gradient(90deg, #ff004c, #ffcc00, #00d26a, #00a2ff, #8c48ff, #ff004c, #ffcc00);
    background-size: 280% 100%;
    opacity: .9;
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: start-border-rainbow-slide 1850ms linear infinite;
}