cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - Activehtmlicon-personicon-teamoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
              <h1 class="begin">Please scroll...</h1>

<video preload data-start="@data-time: 0" data-end="@data-time: 1">
  	<source type="video/webm; codecs=&quot;vp8, vorbis&quot;" src="https://www.html5rocks.com/tutorials/video/basics/Chrome_ImF.webm">
	<source type="video/ogg; codecs=&quot;theora, vorbis&quot;" src="https://www.html5rocks.com/tutorials/video/basics/Chrome_ImF.ogv">
	<source type="video/mp4; codecs=&quot;avc1.42E01E, mp4a.40.2&quot;" src="https://www.html5rocks.com/tutorials/video/basics/Chrome_ImF.mp4">
</video>

<h1 class="ending">The end.</h1>
            
          
!
            
              body {
  height: 3000px;
  position: relative;
  background-color: #eee;
}

video {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 1;
  transform: translate(-50%,-50%);
  max-width: 90%;
  max-height: 80%;
}

h1 {
  text-align: center;
  position: absolute;
  left: 0;
  right: 0;
  z-index: 2;
}

.ending {
  position: absolute;
  bottom: 0;
}
            
          
!
            
              /*! skrollr 0.6.29 (2014-11-17) | Alexander Prinzhorn - https://github.com/Prinzhorn/skrollr | Free to use under terms of MIT license */
(function(e,t,r){"use strict";function n(r){if(o=t.documentElement,a=t.body,Y(),lt=this,r=r||{},mt=r.constants||{},r.easing)for(var n in r.easing)X[n]=r.easing[n];Tt=r.edgeStrategy||"set",ft={beforerender:r.beforerender,render:r.render,keyframe:r.keyframe},ut=r.forceHeight!==!1,ut&&(zt=r.scale||1),pt=r.mobileDeceleration||x,gt=r.smoothScrolling!==!1,vt=r.smoothScrollingDuration||A,ht={targetTop:lt.getScrollTop()},Kt=(r.mobileCheck||function(){return/Android|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent||navigator.vendor||e.opera)})(),Kt?(ct=t.getElementById(r.skrollrBody||E),ct&&it(),j(),Dt(o,[y,S],[T])):Dt(o,[y,b],[T]),lt.refresh(),kt(e,"resize orientationchange",function(){var e=o.clientWidth,t=o.clientHeight;(t!==Bt||e!==$t)&&(Bt=t,$t=e,_t=!0)});var i=R();return function l(){J(),St=i(l)}(),lt}var o,a,i={get:function(){return lt},init:function(e){return lt||new n(e)},VERSION:"0.6.29"},l=Object.prototype.hasOwnProperty,s=e.Math,c=e.getComputedStyle,f="touchstart",u="touchmove",m="touchcancel",p="touchend",d="skrollable",g=d+"-before",v=d+"-between",h=d+"-after",y="skrollr",T="no-"+y,b=y+"-desktop",S=y+"-mobile",k="linear",w=1e3,x=.004,E="skrollr-body",A=200,F="start",C="end",H="center",D="bottom",I="___skrollable_id",P=/^(?:input|textarea|button|select)$/i,N=/^\s+|\s+$/g,O=/^data(?:-(_\w+))?(?:-?(-?\d*\.?\d+p?))?(?:-?(start|end|top|center|bottom))?(?:-?(top|center|bottom))?$/,V=/\s*(@?[\w\-\[\]]+)\s*:\s*(.+?)\s*(?:;|$)/gi,z=/^(@?[a-z\-]+)\[(\w+)\]$/,q=/-([a-z0-9_])/g,L=function(e,t){return t.toUpperCase()},M=/[\-+]?[\d]*\.?[\d]+/g,$=/\{\?\}/g,B=/rgba?\(\s*-?\d+\s*,\s*-?\d+\s*,\s*-?\d+/g,_=/[a-z\-]+-gradient/g,G="",K="",Y=function(){var e=/^(?:O|Moz|webkit|ms)|(?:-(?:o|moz|webkit|ms)-)/;if(c){var t=c(a,null);for(var n in t)if(G=n.match(e)||+n==n&&t[n].match(e))break;if(!G)return G=K="",r;G=G[0],"-"===G.slice(0,1)?(K=G,G={"-webkit-":"webkit","-moz-":"Moz","-ms-":"ms","-o-":"O"}[G]):K="-"+G.toLowerCase()+"-"}},R=function(){var t=e.requestAnimationFrame||e[G.toLowerCase()+"RequestAnimationFrame"],r=Nt();return(Kt||!t)&&(t=function(t){var n=Nt()-r,o=s.max(0,1e3/60-n);return e.setTimeout(function(){r=Nt(),t()},o)}),t},U=function(){var t=e.cancelAnimationFrame||e[G.toLowerCase()+"CancelAnimationFrame"];return(Kt||!t)&&(t=function(t){return e.clearTimeout(t)}),t},X={begin:function(){return 0},end:function(){return 1},linear:function(e){return e},quadratic:function(e){return e*e},cubic:function(e){return e*e*e},swing:function(e){return-s.cos(e*s.PI)/2+.5},sqrt:function(e){return s.sqrt(e)},outCubic:function(e){return s.pow(e-1,3)+1},bounce:function(e){var t;if(.5083>=e)t=3;else if(.8489>=e)t=9;else if(.96208>=e)t=27;else{if(!(.99981>=e))return 1;t=91}return 1-s.abs(3*s.cos(1.028*e*t)/t)}};n.prototype.refresh=function(e){var n,o,a=!1;for(e===r?(a=!0,st=[],Gt=0,e=t.getElementsByTagName("*")):e.length===r&&(e=[e]),n=0,o=e.length;o>n;n++){var i=e[n],l=i,s=[],c=gt,f=Tt,u=!1;if(a&&I in i&&delete i[I],i.attributes){for(var m=0,p=i.attributes.length;p>m;m++){var g=i.attributes[m];if("data-anchor-target"!==g.name)if("data-smooth-scrolling"!==g.name)if("data-edge-strategy"!==g.name)if("data-emit-events"!==g.name){var v=g.name.match(O);if(null!==v){var h={props:g.value,element:i,eventType:g.name.replace(q,L)};s.push(h);var y=v[1];y&&(h.constant=y.substr(1));var T=v[2];/p$/.test(T)?(h.isPercentage=!0,h.offset=(0|T.slice(0,-1))/100):h.offset=0|T;var b=v[3],S=v[4]||b;b&&b!==F&&b!==C?(h.mode="relative",h.anchors=[b,S]):(h.mode="absolute",b===C?h.isEnd=!0:h.isPercentage||(h.offset=h.offset*zt))}}else u=!0;else f=g.value;else c="off"!==g.value;else if(l=t.querySelector(g.value),null===l)throw'Unable to find anchor target "'+g.value+'"'}if(s.length){var k,w,x;!a&&I in i?(x=i[I],k=st[x].styleAttr,w=st[x].classAttr):(x=i[I]=Gt++,k=i.style.cssText,w=Ht(i)),st[x]={element:i,styleAttr:k,classAttr:w,anchorTarget:l,keyFrames:s,smoothScrolling:c,edgeStrategy:f,emitEvents:u,lastFrameIndex:-1},Dt(i,[d],[])}}}for(At(),n=0,o=e.length;o>n;n++){var E=st[e[n][I]];E!==r&&(Q(E),tt(E))}return lt},n.prototype.relativeToAbsolute=function(e,t,r){var n=o.clientHeight,a=e.getBoundingClientRect(),i=a.top,l=a.bottom-a.top;return t===D?i-=n:t===H&&(i-=n/2),r===D?i+=l:r===H&&(i+=l/2),i+=lt.getScrollTop(),0|i+.5},n.prototype.animateTo=function(e,t){t=t||{};var n=Nt(),o=lt.getScrollTop();return dt={startTop:o,topDiff:e-o,targetTop:e,duration:t.duration||w,startTime:n,endTime:n+(t.duration||w),easing:X[t.easing||k],done:t.done},dt.topDiff||(dt.done&&dt.done.call(lt,!1),dt=r),lt},n.prototype.stopAnimateTo=function(){dt&&dt.done&&dt.done.call(lt,!0),dt=r},n.prototype.isAnimatingTo=function(){return!!dt},n.prototype.isMobile=function(){return Kt},n.prototype.setScrollTop=function(t,r){return yt=r===!0,Kt?Yt=s.min(s.max(t,0),Vt):e.scrollTo(0,t),lt},n.prototype.getScrollTop=function(){return Kt?Yt:e.pageYOffset||o.scrollTop||a.scrollTop||0},n.prototype.getMaxScrollTop=function(){return Vt},n.prototype.on=function(e,t){return ft[e]=t,lt},n.prototype.off=function(e){return delete ft[e],lt},n.prototype.destroy=function(){var e=U();e(St),xt(),Dt(o,[T],[y,b,S]);for(var t=0,n=st.length;n>t;t++)at(st[t].element);o.style.overflow=a.style.overflow="",o.style.height=a.style.height="",ct&&i.setStyle(ct,"transform","none"),lt=r,ct=r,ft=r,ut=r,Vt=0,zt=1,mt=r,pt=r,qt="down",Lt=-1,$t=0,Bt=0,_t=!1,dt=r,gt=r,vt=r,ht=r,yt=r,Gt=0,Tt=r,Kt=!1,Yt=0,bt=r};var j=function(){var n,i,l,c,d,g,v,h,y,T,b,S;kt(o,[f,u,m,p].join(" "),function(e){var o=e.changedTouches[0];for(c=e.target;3===c.nodeType;)c=c.parentNode;switch(d=o.clientY,g=o.clientX,T=e.timeStamp,P.test(c.tagName)||e.preventDefault(),e.type){case f:n&&n.blur(),lt.stopAnimateTo(),n=c,i=v=d,l=g,y=T;break;case u:P.test(c.tagName)&&t.activeElement!==c&&e.preventDefault(),h=d-v,S=T-b,lt.setScrollTop(Yt-h,!0),v=d,b=T;break;default:case m:case p:var a=i-d,k=l-g,w=k*k+a*a;if(49>w){if(!P.test(n.tagName)){n.focus();var x=t.createEvent("MouseEvents");x.initMouseEvent("click",!0,!0,e.view,1,o.screenX,o.screenY,o.clientX,o.clientY,e.ctrlKey,e.altKey,e.shiftKey,e.metaKey,0,null),n.dispatchEvent(x)}return}n=r;var E=h/S;E=s.max(s.min(E,3),-3);var A=s.abs(E/pt),F=E*A+.5*pt*A*A,C=lt.getScrollTop()-F,H=0;C>Vt?(H=(Vt-C)/F,C=Vt):0>C&&(H=-C/F,C=0),A*=1-H,lt.animateTo(0|C+.5,{easing:"outCubic",duration:A})}}),e.scrollTo(0,0),o.style.overflow=a.style.overflow="hidden"},W=function(){var e,t,r,n,a,i,l,c,f,u,m,p=o.clientHeight,d=Ft();for(c=0,f=st.length;f>c;c++)for(e=st[c],t=e.element,r=e.anchorTarget,n=e.keyFrames,a=0,i=n.length;i>a;a++)l=n[a],u=l.offset,m=d[l.constant]||0,l.frame=u,l.isPercentage&&(u*=p,l.frame=u),"relative"===l.mode&&(at(t),l.frame=lt.relativeToAbsolute(r,l.anchors[0],l.anchors[1])-u,at(t,!0)),l.frame+=m,ut&&!l.isEnd&&l.frame>Vt&&(Vt=l.frame);for(Vt=s.max(Vt,Ct()),c=0,f=st.length;f>c;c++){for(e=st[c],n=e.keyFrames,a=0,i=n.length;i>a;a++)l=n[a],m=d[l.constant]||0,l.isEnd&&(l.frame=Vt-l.offset+m);e.keyFrames.sort(Ot)}},Z=function(e,t){for(var r=0,n=st.length;n>r;r++){var o,a,s=st[r],c=s.element,f=s.smoothScrolling?e:t,u=s.keyFrames,m=u.length,p=u[0],y=u[u.length-1],T=p.frame>f,b=f>y.frame,S=T?p:y,k=s.emitEvents,w=s.lastFrameIndex;if(T||b){if(T&&-1===s.edge||b&&1===s.edge)continue;switch(T?(Dt(c,[g],[h,v]),k&&w>-1&&(Et(c,p.eventType,qt),s.lastFrameIndex=-1)):(Dt(c,[h],[g,v]),k&&m>w&&(Et(c,y.eventType,qt),s.lastFrameIndex=m)),s.edge=T?-1:1,s.edgeStrategy){case"reset":at(c);continue;case"ease":f=S.frame;break;default:case"set":var x=S.props;for(o in x)l.call(x,o)&&(a=ot(x[o].value),0===o.indexOf("@")?c.setAttribute(o.substr(1),a):i.setStyle(c,o,a));continue}}else 0!==s.edge&&(Dt(c,[d,v],[g,h]),s.edge=0);for(var E=0;m-1>E;E++)if(f>=u[E].frame&&u[E+1].frame>=f){var A=u[E],F=u[E+1];for(o in A.props)if(l.call(A.props,o)){var C=(f-A.frame)/(F.frame-A.frame);C=A.props[o].easing(C),a=nt(A.props[o].value,F.props[o].value,C),a=ot(a),0===o.indexOf("@")?c.setAttribute(o.substr(1),a):i.setStyle(c,o,a)}k&&w!==E&&("down"===qt?Et(c,A.eventType,qt):Et(c,F.eventType,qt),s.lastFrameIndex=E);break}}},J=function(){_t&&(_t=!1,At());var e,t,n=lt.getScrollTop(),o=Nt();if(dt)o>=dt.endTime?(n=dt.targetTop,e=dt.done,dt=r):(t=dt.easing((o-dt.startTime)/dt.duration),n=0|dt.startTop+t*dt.topDiff),lt.setScrollTop(n,!0);else if(!yt){var a=ht.targetTop-n;a&&(ht={startTop:Lt,topDiff:n-Lt,targetTop:n,startTime:Mt,endTime:Mt+vt}),ht.endTime>=o&&(t=X.sqrt((o-ht.startTime)/vt),n=0|ht.startTop+t*ht.topDiff)}if(Kt&&ct&&i.setStyle(ct,"transform","translate(0, "+-Yt+"px) "+bt),yt||Lt!==n){qt=n>Lt?"down":Lt>n?"up":qt,yt=!1;var l={curTop:n,lastTop:Lt,maxTop:Vt,direction:qt},s=ft.beforerender&&ft.beforerender.call(lt,l);s!==!1&&(Z(n,lt.getScrollTop()),Lt=n,ft.render&&ft.render.call(lt,l)),e&&e.call(lt,!1)}Mt=o},Q=function(e){for(var t=0,r=e.keyFrames.length;r>t;t++){for(var n,o,a,i,l=e.keyFrames[t],s={};null!==(i=V.exec(l.props));)a=i[1],o=i[2],n=a.match(z),null!==n?(a=n[1],n=n[2]):n=k,o=o.indexOf("!")?et(o):[o.slice(1)],s[a]={value:o,easing:X[n]};l.props=s}},et=function(e){var t=[];return B.lastIndex=0,e=e.replace(B,function(e){return e.replace(M,function(e){return 100*(e/255)+"%"})}),K&&(_.lastIndex=0,e=e.replace(_,function(e){return K+e})),e=e.replace(M,function(e){return t.push(+e),"{?}"}),t.unshift(e),t},tt=function(e){var t,r,n={};for(t=0,r=e.keyFrames.length;r>t;t++)rt(e.keyFrames[t],n);for(n={},t=e.keyFrames.length-1;t>=0;t--)rt(e.keyFrames[t],n)},rt=function(e,t){var r;for(r in t)l.call(e.props,r)||(e.props[r]=t[r]);for(r in e.props)t[r]=e.props[r]},nt=function(e,t,r){var n,o=e.length;if(o!==t.length)throw"Can't interpolate between \""+e[0]+'" and "'+t[0]+'"';var a=[e[0]];for(n=1;o>n;n++)a[n]=e[n]+(t[n]-e[n])*r;return a},ot=function(e){var t=1;return $.lastIndex=0,e[0].replace($,function(){return e[t++]})},at=function(e,t){e=[].concat(e);for(var r,n,o=0,a=e.length;a>o;o++)n=e[o],r=st[n[I]],r&&(t?(n.style.cssText=r.dirtyStyleAttr,Dt(n,r.dirtyClassAttr)):(r.dirtyStyleAttr=n.style.cssText,r.dirtyClassAttr=Ht(n),n.style.cssText=r.styleAttr,Dt(n,r.classAttr)))},it=function(){bt="translateZ(0)",i.setStyle(ct,"transform",bt);var e=c(ct),t=e.getPropertyValue("transform"),r=e.getPropertyValue(K+"transform"),n=t&&"none"!==t||r&&"none"!==r;n||(bt="")};i.setStyle=function(e,t,r){var n=e.style;if(t=t.replace(q,L).replace("-",""),"zIndex"===t)n[t]=isNaN(r)?r:""+(0|r);else if("float"===t)n.styleFloat=n.cssFloat=r;else try{G&&(n[G+t.slice(0,1).toUpperCase()+t.slice(1)]=r),n[t]=r}catch(o){}};var lt,st,ct,ft,ut,mt,pt,dt,gt,vt,ht,yt,Tt,bt,St,kt=i.addEvent=function(t,r,n){var o=function(t){return t=t||e.event,t.target||(t.target=t.srcElement),t.preventDefault||(t.preventDefault=function(){t.returnValue=!1,t.defaultPrevented=!0}),n.call(this,t)};r=r.split(" ");for(var a,i=0,l=r.length;l>i;i++)a=r[i],t.addEventListener?t.addEventListener(a,n,!1):t.attachEvent("on"+a,o),Rt.push({element:t,name:a,listener:n})},wt=i.removeEvent=function(e,t,r){t=t.split(" ");for(var n=0,o=t.length;o>n;n++)e.removeEventListener?e.removeEventListener(t[n],r,!1):e.detachEvent("on"+t[n],r)},xt=function(){for(var e,t=0,r=Rt.length;r>t;t++)e=Rt[t],wt(e.element,e.name,e.listener);Rt=[]},Et=function(e,t,r){ft.keyframe&&ft.keyframe.call(lt,e,t,r)},At=function(){var e=lt.getScrollTop();Vt=0,ut&&!Kt&&(a.style.height=""),W(),ut&&!Kt&&(a.style.height=Vt+o.clientHeight+"px"),Kt?lt.setScrollTop(s.min(lt.getScrollTop(),Vt)):lt.setScrollTop(e,!0),yt=!0},Ft=function(){var e,t,r=o.clientHeight,n={};for(e in mt)t=mt[e],"function"==typeof t?t=t.call(lt):/p$/.test(t)&&(t=t.slice(0,-1)/100*r),n[e]=t;return n},Ct=function(){var e,t=0;return ct&&(t=s.max(ct.offsetHeight,ct.scrollHeight)),e=s.max(t,a.scrollHeight,a.offsetHeight,o.scrollHeight,o.offsetHeight,o.clientHeight),e-o.clientHeight},Ht=function(t){var r="className";return e.SVGElement&&t instanceof e.SVGElement&&(t=t[r],r="baseVal"),t[r]},Dt=function(t,n,o){var a="className";if(e.SVGElement&&t instanceof e.SVGElement&&(t=t[a],a="baseVal"),o===r)return t[a]=n,r;for(var i=t[a],l=0,s=o.length;s>l;l++)i=Pt(i).replace(Pt(o[l])," ");i=It(i);for(var c=0,f=n.length;f>c;c++)-1===Pt(i).indexOf(Pt(n[c]))&&(i+=" "+n[c]);t[a]=It(i)},It=function(e){return e.replace(N,"")},Pt=function(e){return" "+e+" "},Nt=Date.now||function(){return+new Date},Ot=function(e,t){return e.frame-t.frame},Vt=0,zt=1,qt="down",Lt=-1,Mt=Nt(),$t=0,Bt=0,_t=!1,Gt=0,Kt=!1,Yt=0,Rt=[];"function"==typeof define&&define.amd?define([],function(){return i}):"undefined"!=typeof module&&module.exports?module.exports=i:e.skrollr=i})(window,document);

// Init Skrollr
 
skrollr.init({
  smoothScrolling: false,
  forceHeight: false
});

// Seek video

		// Cross browser animation
    // https://gist.github.com/Warry/4254579#beware-of-reflows
    var animFrame = window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        // IE Fallback, you can even fallback to onscroll
        function(callback){ window.setTimeout(callback, 1000/60) };

    function seek()
    {
      $('video[data-time]').each(function()
                                 {
        var $video = $(this),
            ratio = parseFloat( $video.attr('data-time') ).toFixed(2), // Uses Skrollr to get scroll ratio
            duration = $video[0].duration; // Total video time

        // Seek through video (if video seems loaded)
        if( duration ) $video[0].currentTime = duration * ratio;
      });            

      // Repeat
      animFrame(seek);
    }

    $('video[data-time]').on('loadedmetadata', function(e)
                             {
      // Launch first animation
      animFrame(seek);
    });
            
          
!
999px
Close

Asset uploading is a PRO feature.

As a PRO member, you can drag-and-drop upload files here to use as resources. Images, Libraries, JSON data... anything you want. You can even edit them anytime, like any other code on CodePen.

Go PRO

Loading ..................

Console