Red Seal — Return to the Beginning

Source Code

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

<!-- TB-2065 / Red Seal / 和の印章 | paste before the closing body tag (inside the footer for TB-2069) -->
<button aria-label="ページの先頭へ戻る" class="btt seal tb-btt-2065" type="button"><span class="seal-ring"><b>一</b><small>はじめに</small></span></button>

/* 2065 / production button rules only */
.tb-btt-2065{box-sizing:border-box;font:inherit;cursor:pointer}.tb-btt-2065 :is(span,i,em,b,small,img){box-sizing:border-box}
.btt.tb-btt-2065{position:fixed;z-index:90;border:0;cursor:pointer;-webkit-tap-highlight-color:transparent;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .28s ease,visibility .28s ease,transform .35s ease}.btt.tb-btt-2065:focus-visible{outline:3px solid #f0af43;outline-offset:5px}.tb-btt-2065 .seal{left:26px;bottom:32px;width:106px;height:106px;border-radius:50%;background:#fdf8f0;border:2px solid #ba4639;box-shadow:0 4px 0 #d8c3a8,0 12px 26px #5833231a;display:grid;place-items:center;transition:opacity .28s,visibility .28s,transform .34s}.tb-btt-2065 .seal-ring{width:88px;height:88px;border:1px solid #ba4639;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#aa3b30;transform:rotate(-11deg)}.tb-btt-2065 .seal b{font:700 42px/1 serif}.tb-btt-2065 .seal small{font:600 11px/1.5 serif;letter-spacing:.06em}.tb-btt-2065 .seal:hover .seal-ring{animation:tb-btt-2065-stampr .42s ease both}.tb-btt-2065 .seal:hover{background:#b6473b}.tb-btt-2065 .seal:hover .seal-ring{color:#fff;border-color:#fff}@media  (max-width:600px){.tb-btt-2065 .seal{left:15px;bottom:18px;width:84px;height:84px}.tb-btt-2065 .seal-ring{width:70px;height:70px}.tb-btt-2065 .seal b{font-size:31px}.tb-btt-2065 .seal small{font-size:9px}}
@keyframes tb-btt-2065-stampr{45%{transform:rotate(-11deg) scale(.85)}100%{transform:rotate(0) scale(1)}}
@media(prefers-reduced-motion:reduce){.tb-btt-2065,.tb-btt-2065 *{animation-duration:.01ms!important;transition-duration:.01ms!important}}

(()=>{'use strict';const target=document.querySelector('.btt, .footer-return');if(!target)return;const isFooter=target.classList.contains('footer-return');const reduced=matchMedia('(prefers-reduced-motion: reduce)');let active=false;const update=()=>{const y=window.scrollY;const p=Math.max(0,Math.min(1,y/Math.max(1,document.documentElement.scrollHeight-innerHeight)));if(!isFooter){const visible=y>160;target.classList.toggle('is-visible',visible);target.setAttribute('aria-hidden',String(!visible));target.tabIndex=visible?0:-1;}target.style.setProperty('--pct',p.toFixed(3));const txt=target.querySelector('[data-progress]');if(txt)txt.textContent=String(Math.round(100*p)).padStart(2,'0')+'%';};const scroll=()=>{if(active)return;active=true;requestAnimationFrame(()=>{active=false;update()})};target.addEventListener('click',()=>window.scrollTo({top:0,behavior:reduced.matches?'instant':'smooth'}));addEventListener('scroll',scroll,{passive:true});addEventListener('resize',scroll,{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

Japanese craft, printmaking and literary websites.

Technical Notes

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

Mobile：Check tap target, visibility and positioning on small screens.

Browser：Designed for current Chrome, Edge, Firefox and Safari.

Reduced Motion：CSS animations respect the reduced-motion preference.