Luma / Light Sweep — Back to Top

Source Code

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

<div class="tbtt-2185" data-tb-btt-id="2185"><button aria-label="Return to top" class="btt btt-2185" type="button"><span class="eyebrow">RETURN TO</span><span class="boldword">TOP.</span><i class="sweep"></i><svg aria-hidden="true" class="arrow" fill="none" viewbox="0 0 40 40"><path d="M20 33V7M9 18 20 7l11 11" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2.3"></path></svg></button></div>

.tbtt-2185{position:fixed;z-index:2147480000;right:clamp(12px,2vw,28px);bottom:clamp(16px,2.2vw,30px);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(12px);transition:opacity .4s ease,visibility .4s,transform .4s ease;box-sizing:border-box} 
.tbtt-2185.is-shown{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.tbtt-2185 .btt{position:relative!important;left:auto!important;right:auto!important;top:auto!important;bottom:auto!important;margin:0!important}
.tbtt-2185 button{font:inherit}
.tbtt-2185 button:focus-visible{outline:3px solid #1276ad;outline-offset:4px}
@media(max-width:640px){.tbtt-2185:not(.tbtt-2185--footer){right:12px;bottom:14px;transform-origin:bottom right;scale:.82}}
@media(prefers-reduced-motion:reduce){.tbtt-2185,.tbtt-2185 *, .tbtt-2185 *::before,.tbtt-2185 *::after{animation:none!important;transition-duration:.01ms!important}}

.tbtt-2185 .btt{--enter:0;position:absolute;z-index:3;right:23px;bottom:22px;appearance:none;border:0;margin:0;padding:0;cursor:pointer;display:block;overflow:visible;text-decoration:none;line-height:1;color:inherit;touch-action:manipulation;transition:transform .8s cubic-bezier(.2,.7,.2,1), box-shadow .8s ease,background-color .8s ease, border-color .8s ease, color .8s ease;transform-origin:center;user-select:none;outline-offset:5px}
.tbtt-2185 .btt:focus-visible{outline:3px solid #257ae5}
.tbtt-2185 .btt svg.arrow{display:block;width:30px;height:30px}
.tbtt-2185 .btt>*, .tbtt-2185 .btt span, .tbtt-2185 .btt i{pointer-events:none}
.tbtt-2185 .btt:hover{transition-duration:.82s}
.tbtt-2185 .btt:hover .arrow{transition:transform .85s cubic-bezier(.18,.8,.15,1)}
.tbtt-2185 .btt .arrow{transition:transform .85s cubic-bezier(.18,.8,.15,1)}
.tbtt-2185 .btt-2185{width:165px;height:91px;background:#16272f;color:#fbf8f0;border:1px solid #59818c;border-radius:3px;padding:15px 19px;overflow:hidden;text-align:left;box-shadow:0 7px 0 #07191f}
.tbtt-2185 .btt-2185 .eyebrow{display:block;font:600 9px Arial;letter-spacing:.26em;color:#eab06f}
.tbtt-2185 .btt-2185 .boldword{display:block;font:700 36px/1.2 Georgia;letter-spacing:-.05em;margin-top:4px}
.tbtt-2185 .btt-2185 .arrow{position:absolute;right:13px;bottom:15px;width:27px;height:27px}
.tbtt-2185 .btt-2185 .sweep{position:absolute;inset:0;background:linear-gradient(112deg,transparent 40%,#fff3 50%,transparent 60%);transform:translateX(-120%);animation:linewalk 9s ease-in-out infinite}
.tbtt-2185 .btt-2185:hover{transform:translateY(-4px);box-shadow:0 11px 0 #07191f}
.tbtt-2185 .btt-2185:hover .arrow{transform:translateY(-8px)}
@keyframes rise{0%,15%,100%{transform:translateY(0)}55%{transform:translateY(-6px)}}
@keyframes linewalk{0%,12%{transform:translateX(-105%)}55%,76%{transform:translateX(105%)}100%{transform:translateX(105%)}}
@keyframes breathe{0%,100%{opacity:.35}50%{opacity:1}}
@keyframes turn{to{transform:rotate(360deg)}}
@keyframes gentle-tilt{0%,13%,100%{transform:rotate(-5deg)}42%,60%{transform:rotate(4deg)}}
@keyframes dimmove{0%,100%{opacity:.32;transform:translateY(2px)}50%{opacity:1;transform:translateY(-3px)}}
@keyframes marker-move{0%,12%,100%{top:0}55%,75%{top:56px}}
@keyframes rotate-slow{to{transform:rotate(360deg)}}
@keyframes seam-shift{to{background-position:64px 0}}
@keyframes editorial-rule{0%,16%,100%{width:68px}55%,74%{width:119px}}
@keyframes bracket-tint{0%,25%,100%{border-color:#bd4e36}53%{border-color:#273e36}}
@keyframes instrument-ring{0%,100%{box-shadow:0 3px 17px #0002}50%{box-shadow:0 3px 17px #bb683c68}}
@keyframes rule-breathe{0%,100%{width:33px}55%{width:110px}}
@keyframes stagger-rise{0%,24%,100%{transform:translateY(5px) skewX(-17deg)}52%{transform:translateY(-6px) skewX(-17deg)}}
@keyframes ridge-move{0%,100%{translate:0 0}45%{translate:0 -5px}}
@keyframes banner-lane{0%,100%{left:0}50%{left:65%}}
@keyframes marquee{to{transform:translateX(-33%)}}
@keyframes spine-grow{0%,100%{transform:scaleY(.33)}60%{transform:scaleY(1)}}
@keyframes dim-motor{0%,100%{opacity:.8}50%{opacity:1}}
@keyframes railgrow{0%,100%{transform:scaleX(.25)}60%{transform:scaleX(1)}}

/* TIPSBLOCKS TB-2185 standalone Back to Top. */
(()=>{'use strict';
 const root=document.querySelector('.tbtt-2185[data-tb-btt-id="2185"]'); if(!root)return;
 const btn=root.querySelector('.btt');if(!btn)return;
 const reduce=window.matchMedia('(prefers-reduced-motion: reduce)');
 function update(){
  const y=Math.max(0,window.scrollY||document.documentElement.scrollTop||0);
  root.classList.toggle('is-shown',y>180);
  const total=Math.max(1,document.documentElement.scrollHeight-window.innerHeight);
  const percent=Math.round(Math.max(0,Math.min(100,100*y/total)));
  btn.style.setProperty('--progress-deg',percent*3.6+'deg');
  const value=btn.querySelector('.value');
  if(value && btn.classList.contains('btt-2186'))value.innerHTML=String(percent).padStart(2,'0')+'<span>%</span>';
 }
 btn.addEventListener('click',function(event){event.preventDefault();window.scrollTo({top:0,behavior:reduce.matches?'auto':'smooth'});});
 window.addEventListener('scroll',update,{passive:true});window.addEventListener('resize',update,{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

General-purpose Back to Top navigation for editorial, business, and content 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.