Look One Tag — Back to Look 01

Source Code

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

<button aria-label="最初のLOOK、ページの先頭へ戻る" class="btt-control btt-2089 btt-hidden" data-btt="" type="button"><span aria-hidden="true" class="look-notch"></span><span class="look-line">COLLECTION 2026</span><strong>LOOK <em>01</em></strong><span class="look-return">BACK TO FIRST LOOK</span><span class="look-current" data-state="">CURRENT LOOK 02</span></button>

 .btt-control{box-sizing:border-box;appearance:none;cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent}.btt-control:focus-visible{outline:3px solid #e6a643;outline-offset:5px}.btt-hidden{opacity:0;visibility:hidden;pointer-events:none}.btt-visible{opacity:1;visibility:visible;pointer-events:auto} @media(prefers-reduced-motion:reduce){.btt-control,.btt-control *{animation-duration:.01ms!important;transition-duration:.01ms!important}}
 .btt-2089{position:fixed;left:clamp(15px,2vw,38px);top:50%;z-index:40;width:102px;min-height:263px;transform:translate(-18px,-50%);opacity:0;visibility:hidden;border:0;border-left:2px solid #22292b;background:rgba(249,249,244,.95);color:#202727;box-shadow:9px 15px 25px #2222;padding:15px 9px;display:flex;flex-direction:column;align-items:start;text-align:left;gap:18px;transition:opacity .3s,transform .3s,visibility .3s,width .3s}.btt-2089.btt-visible{opacity:1;transform:translate(0,-50%)}.look-notch{position:absolute;right:0;top:0;width:23px;height:23px;clip-path:polygon(0 0,100% 100%,100% 0);background:#c3ab86}.look-line{font:700 9px/1.4 Arial;letter-spacing:.13em;writing-mode:vertical-rl;height:84px}.btt-2089 strong{font:700 18px/1 Arial;letter-spacing:.04em;white-space:nowrap}.btt-2089 em{font:italic 22px Georgia,serif}.look-return{font:800 10px/1.3 Arial;letter-spacing:.09em;max-width:83px}.look-current{font:700 9px/1.3 Arial;letter-spacing:.02em;max-width:87px;border-top:1px solid #bbb;padding-top:8px}.btt-2089:hover{width:125px;box-shadow:15px 20px 30px #2223}.btt-2089.is-going strong{color:#b68058}@media(max-width:650px){.btt-2089{top:auto;left:10px;bottom:16px;min-height:114px;width:167px;transform:translateY(18px);padding:12px;gap:7px;border-left-width:3px}.btt-2089.btt-visible{transform:none}.look-line{height:auto;writing-mode:horizontal-tb}.look-return,.look-current{max-width:none}.btt-2089:hover{width:174px}}
.btt-2089.btt-visible{visibility:visible;pointer-events:auto}

(()=>{'use strict';const el=document.querySelector('[data-btt]');if(!el)return;const footerOnly=false;const reduce=window.matchMedia('(prefers-reduced-motion: reduce)');let raf=0;function update(){raf=0;const p=Math.max(0,Math.min(1,window.scrollY/Math.max(1,document.documentElement.scrollHeight-window.innerHeight)));if(!footerOnly){const shown=window.scrollY>170;el.classList.toggle('btt-visible',shown);el.classList.toggle('btt-hidden',!shown);el.tabIndex=shown?0:-1;el.setAttribute('aria-hidden',String(!shown));}el.style.setProperty('--progress',p.toFixed(3));const field=el.querySelector('[data-state]');if(field)field.textContent='CURRENT LOOK '+String(Math.max(2,Math.min(6,Math.floor(p*6)+1))).padStart(2,'0');}function onScroll(){if(!raf)raf=requestAnimationFrame(update)}window.addEventListener('scroll',onScroll,{passive:true});window.addEventListener('resize',onScroll,{passive:true});el.addEventListener('click',()=>{el.classList.add('is-going');window.scrollTo({top:0,behavior:reduce.matches?'auto':'smooth'});window.setTimeout(()=>el.classList.remove('is-going'),650)});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

Fashion collections and lookbooks.

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.