Transit / Split Bar — Back to Top

Source Code

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

<div class="tbtt-2184" data-tb-btt-id="2184"><button aria-label="Return to top" class="btt btt-2184" type="button"><span class="word">BACK TO TOP</span><span class="solid"><svg aria-hidden="true" class="arrow" fill="none" viewbox="0 0 40 40"><path d="M9 31 31 9M15 9h16v16" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2.3"></path></svg></span><span class="stitch"></span></button></div>

.tbtt-2184{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-2184.is-shown{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.tbtt-2184 .btt{position:relative!important;left:auto!important;right:auto!important;top:auto!important;bottom:auto!important;margin:0!important}
.tbtt-2184 button{font:inherit}
.tbtt-2184 button:focus-visible{outline:3px solid #1276ad;outline-offset:4px}
@media(max-width:640px){.tbtt-2184:not(.tbtt-2184--footer){right:12px;bottom:14px;transform-origin:bottom right;scale:.82}}
@media(prefers-reduced-motion:reduce){.tbtt-2184,.tbtt-2184 *, .tbtt-2184 *::before,.tbtt-2184 *::after{animation:none!important;transition-duration:.01ms!important}}

.tbtt-2184 .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-2184 .btt:focus-visible{outline:3px solid #257ae5}
.tbtt-2184 .btt svg.arrow{display:block;width:30px;height:30px}
.tbtt-2184 .btt>*, .tbtt-2184 .btt span, .tbtt-2184 .btt i{pointer-events:none}
.tbtt-2184 .btt:hover{transition-duration:.82s}
.tbtt-2184 .btt:hover .arrow{transition:transform .85s cubic-bezier(.18,.8,.15,1)}
.tbtt-2184 .btt .arrow{transition:transform .85s cubic-bezier(.18,.8,.15,1)}
.tbtt-2184 .btt-2184{width:190px;height:57px;display:flex;align-items:center;background:#fff;color:#204b56;box-shadow:0 9px 18px #34515a26}
.tbtt-2184 .btt-2184 .word{flex:1;font:700 12px Arial;letter-spacing:.12em;text-align:center}
.tbtt-2184 .btt-2184 .solid{height:57px;width:57px;display:grid;place-items:center;color:#fff;background:#e7694c;transition:width .85s,background .85s}
.tbtt-2184 .btt-2184 .stitch{position:absolute;height:2px;width:46%;bottom:5px;left:10px;background:linear-gradient(90deg,#58a8b7 50%,transparent 50%);background-size:16px 2px;animation:seam-shift 8s linear infinite}
.tbtt-2184 .btt-2184:hover .solid{width:71px;background:#c94e36}
.tbtt-2184 .btt-2184:hover svg{transform:translate(3px,-3px)}
@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-2184 standalone Back to Top. */
(()=>{'use strict';
 const root=document.querySelector('.tbtt-2184[data-tb-btt-id="2184"]'); 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.