Last Course Return — Back to Entrance

Source Code

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

<!-- TB-2083 / Back to Top: insert before closing body (inside footer for TB-2083) -->
<button class="tb-btt only-at-end bt2083" data-backtop type="button" aria-label="食堂の紹介ページ先頭へ戻る"><span class="bt-menu-caption">おしながきの最初へ</span><span class="bt-menu-text">入口へ戻る <i>↗</i></span></button>

/* TB-2083 : paste only this CSS into the target page. */
.tb-btt{border:0;cursor:pointer;z-index:30;-webkit-tap-highlight-color:transparent;touch-action:manipulation;transition:transform .35s,opacity .3s,background .3s,color .3s,box-shadow .3s;pointer-events:none;opacity:0;visibility:hidden}.tb-btt.is-visible{pointer-events:auto;opacity:1;visibility:visible}.tb-btt:focus-visible{outline:3px solid #f9af4b;outline-offset:5px}.only-at-end{opacity:1;visibility:visible;pointer-events:auto}
.bt2083{position:absolute;right:9%;top:112px;width:min(31vw,240px);height:126px;background:#f8efdc;color:#47372b;border:1px solid #9d8161;border-radius:4px;padding:20px;display:flex;flex-direction:column;justify-content:center;gap:15px;text-align:left;box-shadow:9px 9px 0 #ad8a6238}
.bt-menu-caption{font-size:11px;letter-spacing:.12em}
.bt-menu-text{font-size:clamp(17px,2vw,27px);font-weight:700;border-bottom:1px solid #aa906e;padding-bottom:8px}
.bt-menu-text i{font-style:normal;margin-left:6px}
.bt2083:hover{background:#efdbb5;transform:translateY(-5px)}
@media (max-width:700px){.bt2083{width:175px;height:85px;right:16px;top:120px;padding:14px;gap:8px}.bt-menu-caption{font-size:9px}.bt-menu-text{font-size:18px}}
@media(prefers-reduced-motion:reduce){.tb-btt,.tb-btt *{animation-duration:.01ms!important;transition-duration:.01ms!important}}

(()=>{'use strict';const control=document.querySelector('[data-backtop]');if(!control)return;const reduced=matchMedia('(prefers-reduced-motion: reduce)');const footer=control.classList.contains('only-at-end');let busy=false;function refresh(){busy=false;const max=Math.max(1,document.documentElement.scrollHeight-window.innerHeight);const p=Math.min(1,scrollY/max);document.documentElement.style.setProperty('--page-progress',p.toFixed(4));if(!footer){const show=scrollY>145;control.classList.toggle('is-visible',show);control.tabIndex=show?0:-1;control.setAttribute('aria-hidden',String(!show));}const number=document.querySelector('[data-progress-number]');if(number)number.textContent=Math.round(p*100)+'%';}function onscroll(){if(!busy){busy=true;requestAnimationFrame(refresh)}}addEventListener('scroll',onscroll,{passive:true});addEventListener('resize',onscroll,{passive:true});control.addEventListener('click',()=>window.scrollTo({top:0,behavior:reduced.matches?'instant':'smooth'}));refresh();})();

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

Restaurants, cafes and hospitality.

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.