LINE / TOP — Back to Top
A fine vertical rule and a discreet TOP label sit naturally in generous whitespace. No surrounding button shape.
A fine vertical rule and a discreet TOP label sit naturally in generous whitespace. No surrounding button shape.
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-2001 is-hidden" aria-label="Back to the top of the page" title="Back to Top"><span class="art art-line"><span class="line-track"></span><span class="line-tracer"></span><span class="line-label">TOP</span></span></button>/* TB-2001 — Back to Top button. */
.tb-btt-2001{--selectedtone:#47574f;color:#47574f;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-2001:is(:focus-visible){outline:2px solid currentColor;outline-offset:4px}
.tb-btt-2001.is-hidden{opacity:0;transform:translateY(10px);visibility:hidden;pointer-events:none}
.tb-btt-2001 *{box-sizing:border-box}
.tb-btt-2001 .art{display:flex;position:relative;align-items:center;justify-content:center;flex-shrink:0}
.tb-btt-2001 .art-line{width:36px;height:91px;flex-direction:column}
.tb-btt-2001 .line-track,.tb-btt-2001 .line-tracer{position:absolute;width:1px;left:17px;top:2px;height:61px;background:#c4d0c7}
.tb-btt-2001 .line-tracer{background:currentColor;transform-origin:bottom;transform:scaleY(.52)}
.tb-btt-2001 .line-label{position:absolute;left:3px;bottom:7px;font:10px Georgia,serif;letter-spacing:2px}
.tb-btt-2001:is(:hover,:focus-visible) .line-tracer{animation:tb_btt_2001_lineRun .62s cubic-bezier(.18,.8,.2,1) forwards}
.tb-btt-2001:is(:hover,:focus-visible) .line-label{transform:translateY(-3px);transition:transform .4s}
@keyframes tb_btt_2001_lineRun{0%{transform:scaleY(.2)}100%{transform:scaleY(1)}}
.tb-btt-2001 .art{color:var(--selectedtone,#465b53)}
@media(prefers-reduced-motion:reduce){.tb-btt-2001,.tb-btt-2001 *, .tb-btt-2001 *::before,.tb-btt-2001 *::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}}
/* TB-2001 | Back to Top | No external libraries required. */
(() => {
'use strict';
const button = document.querySelector('.tb-btt-2001');
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
Editorial sites and restrained portfolios
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.