PAPER FLIGHT — Back to Top

Source Code

Copy the HTML, CSS or JavaScript you need for your project.

<button type="button" class="tb-btt-button tb-btt-2012 is-hidden" aria-label="Back to the top of the page" title="Back to Top"><span class="art art-flight"><svg viewBox="0 0 100 100" focusable="false" aria-hidden="true" xmlns="http://www.w3.org/2000/svg"><path class="flight-trace" d="M18 69c10 6 19 3 27-4" fill="none" stroke="currentColor" stroke-opacity=".35" stroke-width="1.8" stroke-dasharray="3 5" stroke-linecap="round"/><g class="flight-plane"><path d="M35 48 82 27 69 74 60 55 35 48Z" fill="#e7eeee" stroke="currentColor" stroke-width="2" stroke-linejoin="round"/><path d="M60 55 82 27 50 64V53" fill="none" stroke="currentColor" stroke-width="1.7" stroke-linejoin="round"/><path d="M50 64 60 55" fill="none" stroke="currentColor" stroke-width="1.5"/></g></svg><span class="flight-caption">TOP</span></span></button>

/* TB-2012 — Back to Top button. */
.tb-btt-2012{--selectedtone:#547b87;color:#547b87;position:fixed;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));z-index:1000;border:0;background:transparent;padding:5px;display:flex;align-items:center;justify-content:center;min-width:48px;min-height:48px;cursor:pointer;font-family:Arial,"Noto Sans JP",sans-serif;line-height:normal;box-sizing:border-box;-webkit-tap-highlight-color:transparent;transition:opacity .24s ease, transform .35s ease,visibility .24s ease}
.tb-btt-2012:is(:focus-visible){outline:2px solid currentColor;outline-offset:4px}
.tb-btt-2012.is-hidden{opacity:0;transform:translateY(10px);visibility:hidden;pointer-events:none}
.tb-btt-2012 *{box-sizing:border-box}
.tb-btt-2012 .art{display:flex;position:relative;align-items:center;justify-content:center;flex-shrink:0}
.tb-btt-2012 .art svg{display:block;overflow:visible;width:100%;height:100%}

.tb-btt-2012 .art-flight{width:83px;height:83px;flex-direction:column}
.tb-btt-2012 .art-flight svg{height:70px}
.tb-btt-2012 .flight-caption{position:absolute;bottom:1px;left:39px;font:9px Arial,sans-serif;letter-spacing:3px}
.tb-btt-2012 .flight-trace{stroke-dasharray:3 5}
.tb-btt-2012 .flight-plane{transform-origin:59px 51px}

.tb-btt-2012:is(:hover,:focus-visible) .flight-plane{animation:tb_btt_2012_flightUp .85s cubic-bezier(.25,.8,.2,1) forwards}
.tb-btt-2012:is(:hover,:focus-visible) .flight-trace{animation:tb_btt_2012_flightTrace .75s ease-out}
@keyframes tb_btt_2012_flightUp{0%{transform:translate(0,0) rotate(0)}100%{transform:translate(7px,-11px) rotate(-5deg)}}
@keyframes tb_btt_2012_flightTrace{0%{stroke-dashoffset:24;opacity:.2}100%{stroke-dashoffset:0;opacity:.65}}
.tb-btt-2012 .art{color:var(--selectedtone,#465b53)}
@media(prefers-reduced-motion:reduce){.tb-btt-2012,.tb-btt-2012 *, .tb-btt-2012 *::before,.tb-btt-2012 *::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}}

/* TB-2012 | Back to Top | No external libraries required. */
(() => {
  'use strict';

  const button = document.querySelector('.tb-btt-2012');
  if (!button) return;

  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)');
  let scheduled = false;

  function update() {
    scheduled = false;
    const visible = window.scrollY > 160;
    button.classList.toggle('is-hidden', !visible);
    button.tabIndex = visible ? 0 : -1;
    button.setAttribute('aria-hidden', String(!visible));
  }

  function requestUpdate() {
    if (scheduled) return;
    scheduled = true;
    requestAnimationFrame(update);
  }

  button.addEventListener('click', () => {
    window.scrollTo({ top: 0, behavior: reduceMotion.matches ? 'auto' : 'smooth' });
  });
  window.addEventListener('scroll', requestUpdate, { passive: true });
  window.addEventListener('resize', requestUpdate, { passive: true });
  update();
})();

How to Use

Insert the HTML button near the end of body, load the CSS, and include JavaScript using defer. Test scrolling, returning to the top, and positioning on mobile.

Use Case

Friendly portfolios and creative studios

Technical Notes

Keep controls usable on touch devices. Test keyboard focus and reduced-motion preferences.

Mobile：Works with tap and keyboard. Check the lower-right offset against other fixed controls.

Browser：Uses standard HTML, CSS and JavaScript. Install all three together; no external library is required.

Reduced Motion：Reduces transitions and smooth scrolling when reduced motion is requested.