biofriction-wp-theme/node_modules/bs-recipes/recipes/grunt.sass.autoprefixer/app/scss/main.scss

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transition-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);
        transform: translate3d(0,0,0);
    }

    40%, 43% {
        transition-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -30px, 0);
    }

    70% {
        transition-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -15px, 0);
    }

    90% {
        transform: translate3d(0,-4px,0);
    }
}

.bounce {
    animation-name: bounce;
    transform-origin: center bottom;
}