CIRCLE / UP — Back to Top
A compact outlined circle with carefully balanced stroke weight and an upward arrow.
A compact outlined circle with carefully balanced stroke weight and an upward arrow.
Design Preview
See the design above before trying the scroll interaction.
Live Demo
Press Try scrolling in the frame, or scroll inside it. Click the lower-right button to return to the top.
Source Code
Copy the HTML, CSS or JavaScript you need for your project.
<button type="button" class="tb-btt-button tb-btt-2002 is-hidden" aria-label="Back to the top of the page" title="Back to Top"><span class="art art-circle"><svg viewBox="0 0 100 100" focusable="false" aria-hidden="true" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="36" fill="none" stroke="currentColor" stroke-width="1.6"/><g class="circle-arrow"> <path d="M20 17 30 7 40 17M30 7V38" transform="translate(20 20)" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></g><g class="circle-arrow-next"><path d="M20 17 30 7 40 17M30 7V38" transform="translate(20 20)" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></g></svg></span></button>/* TB-2002 — Back to Top button. */
.tb-btt-2002{--selectedtone:#344d4b;color:#344d4b;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-2002:is(:focus-visible){outline:2px solid currentColor;outline-offset:4px}
.tb-btt-2002.is-hidden{opacity:0;transform:translateY(10px);visibility:hidden;pointer-events:none}
.tb-btt-2002 *{box-sizing:border-box}
.tb-btt-2002 .art{display:flex;position:relative;align-items:center;justify-content:center;flex-shrink:0}
.tb-btt-2002 .art svg{display:block;overflow:visible;width:100%;height:100%}
.tb-btt-2002 .art-circle{width:58px;height:58px;overflow:hidden}
.tb-btt-2002 .art-circle svg{overflow:hidden}
.tb-btt-2002 .circle-arrow{transform:translateY(0)}
.tb-btt-2002 .circle-arrow-next{transform:translateY(80px)}
.tb-btt-2002:is(:hover,:focus-visible) .circle-arrow{animation:tb_btt_2002_circleExit .5s ease-in-out forwards}
.tb-btt-2002:is(:hover,:focus-visible) .circle-arrow-next{animation:tb_btt_2002_circleEnter .5s ease-in-out forwards}
@keyframes tb_btt_2002_circleExit{to{transform:translateY(-79px)}}
@keyframes tb_btt_2002_circleEnter{to{transform:translateY(0)}}
.tb-btt-2002 .art{color:var(--selectedtone,#465b53)}
@media(prefers-reduced-motion:reduce){.tb-btt-2002,.tb-btt-2002 *, .tb-btt-2002 *::before,.tb-btt-2002 *::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}}
/* TB-2002 | Back to Top | No external libraries required. */
(() => {
'use strict';
const button = document.querySelector('.tb-btt-2002');
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 CSS and JavaScript (defer), then verify scrolling and return-to-top on desktop and mobile.
Use Case
General-purpose websites and blogs
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.