Rotate Out

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/bundles/anime.umd.min.js"></script>
<script>
  (function () {
    // Rotate Out: the element tips away round one of its corners, as if
    // pinned there, picking up speed and fading as it turns.
    // Usage: <div data-rotate-out>…</div>
    // It plays once the element has been in view for data-delay ms, and ends
    // hidden (visibility: hidden) but still taking up its space.
    // Optional: data-corner (the corner it turns round: "bottom-left",
    // default, "bottom-right", "top-left" or "top-right"; give several, like
    // "bottom-left bottom-right", and each loop uses the next), data-angle
    // (how far it turns, in degrees, default 90; negative turns the other
    // way), data-duration (ms, default 750), data-delay (ms in view before it
    // leaves, default 1200), data-loop (fade back in, hold and rotate out
    // again), data-hold (ms to stay between exits when looping, default 1400).
    // Script use: animacious.rotateOut(el, done) plays it on any element now,
    // using its data-* options, and calls done afterwards.
    var DEFAULTS = { corner: 'bottom-left', angle: 90, duration: 750, delay: 1200, hold: 1400 };

    function reduced() {
      return window.matchMedia('(prefers-reduced-motion: reduce)').matches;
    }

    // "bottom-left" (or "left-bottom") -> the CSS origin and which way it turns.
    function corner(name) {
      var top = /top/.test(name);
      var right = /right/.test(name);
      return {
        origin: (right ? 'right' : 'left') + ' ' + (top ? 'top' : 'bottom'),
        // Bottom corners tip down and away; top corners tip up and away.
        sign: (top ? -1 : 1) * (right ? -1 : 1)
      };
    }

    function leave(el, name, done) {
      var d = el.dataset;
      var t = +d.duration || DEFAULTS.duration;
      var a = (d.angle === undefined ? DEFAULTS.angle : +d.angle || 0) * corner(name).sign;
      if (reduced()) {
        anime.utils.set(el, { opacity: 0 });
        if (done) done();
        return;
      }
      el.style.transformOrigin = corner(name).origin;
      anime.utils.set(el, { rotate: 0 });
      anime.createTimeline({
        onComplete: function () {
          if (done) done();
        }
      })
        // A small lift the other way first, as it comes unstuck.
        .add(el, { rotate: a < 0 ? 4 : -4, duration: t * 0.18, ease: 'out(2)' })
        .add(el, {
          rotate: { to: a, ease: 'in(3)' },
          opacity: { to: 0, delay: t * 0.35, duration: t * 0.47, ease: 'in(2)' },
          duration: t * 0.82
        });
    }

    function cycle(el) {
      var d = el.dataset;
      var s = el._rto;
      var corners = (d.corner || DEFAULTS.corner).split(/[\s,]+/);
      leave(el, corners[s.n++ % corners.length], function () {
        if (d.loop === undefined || d.loop === 'false') {
          el.style.visibility = 'hidden';
          return;
        }
        // Come back quietly in place, then go again once it's on screen.
        setTimeout(function () {
          anime.utils.set(el, { rotate: 0, opacity: 0 });
          el.style.transformOrigin = '';
          anime.animate(el, {
            opacity: 1,
            duration: 400,
            ease: 'out(2)',
            onComplete: function () {
              setTimeout(function () {
                if (s.visible) cycle(el);
                else s.waiting = true;
              }, +d.hold || DEFAULTS.hold);
            }
          });
        }, 400);
      });
    }

    window.animacious = window.animacious || {};
    window.animacious.rotateOut = function (el, done) {
      leave(el, (el.dataset.corner || DEFAULTS.corner).split(/[\s,]+/)[0], function () {
        el.style.visibility = 'hidden';
        if (done) done(el);
      });
    };

    function init() {
      var io = new IntersectionObserver(function (entries) {
        entries.forEach(function (e) {
          var s = e.target._rto;
          s.visible = e.isIntersecting;
          if (!e.isIntersecting) return;
          if (!s.started) {
            s.started = true;
            var wait = e.target.dataset.delay;
            setTimeout(function () { cycle(e.target); }, wait === undefined ? DEFAULTS.delay : +wait || 0);
          } else if (s.waiting) {
            s.waiting = false;
            cycle(e.target);
          }
        });
      }, { threshold: 0.2 });
      document.querySelectorAll('[data-rotate-out]').forEach(function (el) {
        if (el._rto) return;
        el._rto = { n: 0 };
        if (!reduced()) io.observe(el);
      });
    }

    if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init);
    else init();
  })();
</script>

<div class="card" data-rotate-out>Card removed</div>

<!-- or tipping up round its top right corner: -->
<div class="card" data-rotate-out data-corner="top-right">Card removed</div>