svg
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 56 56" role="img" aria-label="Ladder"><title>Ladder</title><desc>Five horizontal rungs light bottom-up, then top-down.</desc><defs><circle id="b" r="2.4" fill="#ffffff" opacity="0.07"/><circle id="l" r="3.1"/></defs><style>.l{fill:#ffffff;opacity:0;animation:icon-35-k 2400ms linear infinite both;}@keyframes icon-35-k{0%{opacity:0.08;}25%{opacity:1;}50%{opacity:0.08;}75%{opacity:1;}100%{opacity:0.08;}}@media (prefers-reduced-motion:reduce){.l{animation:none;opacity:0.45;}}.d00,.d01,.d02,.d03,.d04{animation-delay:600ms;}.d10,.d11,.d12,.d13,.d14{animation-delay:300ms;}.d20,.d21,.d22,.d23,.d24{animation-delay:0ms;}.d30,.d31,.d32,.d33,.d34{animation-delay:2100ms;}.d40,.d41,.d42,.d43,.d44{animation-delay:1800ms;}</style><use href="#b" x="6" y="6"/><use href="#b" x="17" y="6"/><use href="#b" x="28" y="6"/><use href="#b" x="39" y="6"/><use href="#b" x="50" y="6"/><use href="#b" x="6" y="17"/><use href="#b" x="17" y="17"/><use href="#b" x="28" y="17"/><use href="#b" x="39" y="17"/><use href="#b" x="50" y="17"/><use href="#b" x="6" y="28"/><use href="#b" x="17" y="28"/><use href="#b" x="28" y="28"/><use href="#b" x="39" y="28"/><use href="#b" x="50" y="28"/><use href="#b" x="6" y="39"/><use href="#b" x="17" y="39"/><use href="#b" x="28" y="39"/><use href="#b" x="39" y="39"/><use href="#b" x="50" y="39"/><use href="#b" x="6" y="50"/><use href="#b" x="17" y="50"/><use href="#b" x="28" y="50"/><use href="#b" x="39" y="50"/><use href="#b" x="50" y="50"/><use class="l d00" href="#l" x="6" y="6"/><use class="l d01" href="#l" x="17" y="6"/><use class="l d02" href="#l" x="28" y="6"/><use class="l d03" href="#l" x="39" y="6"/><use class="l d04" href="#l" x="50" y="6"/><use class="l d10" href="#l" x="6" y="17"/><use class="l d11" href="#l" x="17" y="17"/><use class="l d12" href="#l" x="28" y="17"/><use class="l d13" href="#l" x="39" y="17"/><use class="l d14" href="#l" x="50" y="17"/><use class="l d20" href="#l" x="6" y="28"/><use class="l d21" href="#l" x="17" y="28"/><use class="l d22" href="#l" x="28" y="28"/><use class="l d23" href="#l" x="39" y="28"/><use class="l d24" href="#l" x="50" y="28"/><use class="l d30" href="#l" x="6" y="39"/><use class="l d31" href="#l" x="17" y="39"/><use class="l d32" href="#l" x="28" y="39"/><use class="l d33" href="#l" x="39" y="39"/><use class="l d34" href="#l" x="50" y="39"/><use class="l d40" href="#l" x="6" y="50"/><use class="l d41" href="#l" x="17" y="50"/><use class="l d42" href="#l" x="28" y="50"/><use class="l d43" href="#l" x="39" y="50"/><use class="l d44" href="#l" x="50" y="50"/></svg>