trezor-suite/packages/connect-explorer-theme/css/hamburger.css

.nextra-hamburger svg {
    g {
        @apply nx-origin-center;
        transition: transform 0.2s cubic-bezier(0.25, 1, 0.5, 1);
    }
    path {
        opacity: 1;
        transition:
            transform 0.2s cubic-bezier(0.25, 1, 0.5, 1) 0.2s,
            opacity 0.2s ease 0.2s;
    }

    &.open {
        path {
            transition:
                transform 0.2s cubic-bezier(0.25, 1, 0.5, 1),
                opacity 0s ease 0.2s;
        }
        g {
            transition: transform 0.2s cubic-bezier(0.25, 1, 0.5, 1) 0.2s;
        }
    }

    &.open > {
        path {
            @apply nx-opacity-0;
        }
        g:nth-of-type(1) {
            @apply nx-rotate-45;
            path {
                transform: translate3d(0, 6px, 0);
            }
        }
        g:nth-of-type(2) {
            @apply -nx-rotate-45;
            path {
                transform: translate3d(0, -6px, 0);
            }
        }
    }
}