Reading Ring — Back to Top Button

Source Code

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

<!-- TB-2056 / Reading Ring | paste before closing body -->
<button class="backtop tb-btt-button w2056" type="button" aria-label="Back to top"><span class="w56circle"><span class="w56arrow">↑</span></span><span class="w56label">TOP</span></button>

/* TB-2056 / Reading Ring */
.backtop{box-sizing:border-box;position:fixed;z-index:50;cursor:pointer;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(12px);text-align:center;transition:opacity .24s, transform .28s, visibility .24s}.backtop.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.backtop.w2055.is-visible{transform:translate(-50%,0)}.backtop:focus-visible{outline:3px solid #e7ab4c;outline-offset:4px}
.w2056{right:25px;bottom:27px;border:0;width:78px;height:84px;background:transparent;color:#6d5048}.w56circle{position:absolute;left:10px;top:2px;width:60px;height:60px;display:grid;place-items:center;border-radius:50%;background:conic-gradient(#95675a var(--progress,0%),#d9cdc1 0);box-shadow:0 6px 22px #50352b1a}.w56circle:before{content:"";position:absolute;inset:3px;border-radius:50%;background:#f9f5ee}.w56arrow{z-index:1;font:400 31px/1 Georgia,serif;transition:transform .3s}.w56label{position:absolute;bottom:0;left:0;right:0;font:700 9px Arial,sans-serif;letter-spacing:.25em}.w2056:hover .w56arrow{transform:translateY(-5px)}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
/* POLISH PASS 2026-10-18: alignment, tactile size, emphasis & individual character */
.backtop{isolation:isolate;-webkit-tap-highlight-color:transparent;}
.backtop:focus-visible{outline:3px solid #f0af42;outline-offset:4px;}
@media(prefers-reduced-motion:reduce){.backtop,.backtop *{transition-duration:.01ms!important;animation-duration:.01ms!important}}

.w2056{right:clamp(20px,3.5vw,55px);bottom:clamp(24px,5vh,60px);width:80px;height:88px;}
.w2056 .w56circle{box-shadow:0 4px 16px #5c403326;background:#faf7f2;}
.w2056:hover .w56circle{box-shadow:0 6px 22px #5c40334b;transform:scale(1.07)}
@media(max-width:650px){.w2056{right:18px;bottom:22px}}

(()=>{'use strict';const button=document.querySelector('.backtop');if(!button)return;const footerOnly=button.classList.contains('footer-backtop');const reduced=matchMedia('(prefers-reduced-motion: reduce)');let scheduled=false;function update(){scheduled=false;if(footerOnly)return;const shown=window.scrollY>160;button.classList.toggle('is-visible',shown);button.classList.toggle('is-hidden',!shown);button.tabIndex=shown?0:-1;button.setAttribute('aria-hidden',String(!shown));if(button.classList.contains('w2056')){const max=Math.max(1,document.documentElement.scrollHeight-innerHeight);button.style.setProperty('--progress',(Math.round(Math.min(100,scrollY/max*100)))+'%');}}function onScroll(){if(!scheduled){scheduled=true;requestAnimationFrame(update)}}button.addEventListener('click',()=>window.scrollTo({top:0,behavior:reduced.matches?'instant':'smooth'}));addEventListener('scroll',onScroll,{passive:true});addEventListener('resize',onScroll,{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

Long-form articles, essays and reading-focused publications.

Technical Notes

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

Mobile：Check tap target and placement on mobile devices.

Browser：Test in your supported browsers.

Reduced Motion：CSS respects prefers-reduced-motion.