CSS Sunset Sunrise

Learn how to create CSS Sunset Sunrise using html, css and/or js.

</div>

</div>

</div>

</div>

</div>

</div>

</div>
  </div>
  <div id="waterDistance"  onmousedown="startMove();" onmouseup="stopMove();"></div>
  <div id="darknessOverlaySky"  onmousedown="startMove();" onmouseup="stopMove();"></div>
  <div id="darknessOverlay"></div>
  <div id="oceanRippleContainer">
 </div>
  <div id="oceanRipple"></div>
</body>
<style>
body {
  cursor: pointer;
  overflow: hidden;
  background-color: black;
}

#sun {
	position: absolute;
	top: 0px;
	left: 0%;
	width: 100%;
	height: 50%;
	background-repeat: no-repeat;   
  background: -webkit-radial-gradient(bottom, circle, rgba(242,248,247,1) 0%,rgba(249,249,28,1) 3%,rgba(247,214,46,1) 8%, rgba(248,200,95,1) 12%,rgba(201,165,132,1) 30%,rgba(115,130,133,1) 51%,rgba(46,97,122,1) 85%,rgba(24,75,106,1) 100%);
  background: -moz-radial-gradient(bottom, circle, rgba(242,248,247,1) 0%,rgba(249,249,28,1) 3%,rgba(247,214,46,1) 8%, rgba(248,200,95,1) 12%,rgba(201,165,132,1) 30%,rgba(115,130,133,1) 51%,rgba(46,97,122,1) 85%,rgba(24,75,106,1) 100%);
  background: -ms-radial-gradient(bottom, circle, rgba(242,248,247,1) 0%,rgba(249,249,28,1) 3%,rgba(247,214,46,1) 8%, rgba(248,200,95,1) 12%,rgba(201,165,132,1) 30%,rgba(115,130,133,1) 51%,rgba(46,97,122,1) 85%,rgba(24,75,106,1) 100%);
  
  z-index: 10;
  opacity: 0.5;
  }

#sunDay {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat;   
  background: -webkit-radial-gradient(bottom, circle, rgba(252,255,251,0.9) 0%,rgba(253,250,219,0.4) 30%,rgba(226,219,197,0.01) 70%, rgba(226,219,197,0.0) 70%,rgba(201,165,132,0) 100%);
  background: -moz-radial-gradient(bottom, circle, rgba(252,255,251,0.9) 0%,rgba(253,250,219,0.4) 30%,rgba(226,219,197,0.01) 70%, rgba(226,219,197,0.0) 70%,rgba(201,165,132,0) 100%);
  background: -ms-radial-gradient(bottom, circle, rgba(252,255,251,0.9) 0%,rgba(253,250,219,0.4) 30%,rgba(226,219,197,0.01) 70%, rgba(226,219,197,0.0) 70%,rgba(201,165,132,0) 100%);
  
    z-index: 999;
     opacity: 0.5;
}

#moon {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat;   
  background: -webkit-radial-gradient(40% 55%, circle, rgba(249,249,250,1) -1%, rgba(189,255,254,1) 1%, rgba(8,49,78,1) 1%, rgba(8,26,56,1) 10%, rgba(4,16,46,1) 40%, rgba(2,8,13,1) 70%);
  background: -moz-radial-gradient(40% 55%, circle, rgba(249,249,250,1) -1%, rgba(189,255,254,1) 1%, rgba(8,49,78,1) 1%, rgba(8,26,56,1) 10%, rgba(4,16,46,1) 40%, rgba(2,8,13,1) 70%);
  background: -ms-radial-gradient(40% 55%, circle, rgba(249,249,250,1) -1%, rgba(189,255,254,1) 1%, rgba(8,49,78,1) 1%, rgba(8,26,56,1) 10%, rgba(4,16,46,1) 40%, rgba(2,8,13,1) 70%);
  
  z-index: 10001;
  opacity: 0;  
}

#sunSet {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat;   
    background: -webkit-radial-gradient(bottom, circle, rgba(254,255,255,0.8) 5%,rgba(236,255,0,1) 10%,rgba(253,50,41,1) 25%, rgba(243,0,0,1) 40%,rgba(93,0,0,1) 100%);
    background: -moz-radial-gradient(bottom, circle, rgba(254,255,255,0.8) 5%,rgba(236,255,0,1) 10%,rgba(253,50,41,1) 25%, rgba(243,0,0,1) 40%,rgba(93,0,0,1) 100%);
    background: -ms-radial-gradient(bottom, circle, rgba(254,255,255,0.8) 5%,rgba(236,255,0,1) 10%,rgba(253,50,41,1) 25%, rgba(243,0,0,1) 40%,rgba(93,0,0,1) 100%);
   
    z-index: 999;
     opacity: 0.3;
}

#sky {
  cursor: pointer;
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  z-index: 5; 
   background: -webkit-linear-gradient(bottom, rgba(249,251,240,1) 10%, rgba(215,253,254,1) 20%, rgba(167,222,253,1) 40%, rgba(110,175,255,1) 100%); 
   background: -moz-linear-gradient(bottom, rgba(249,251,240,1) 10%, rgba(215,253,254,1) 20%, rgba(167,222,253,1) 40%, rgba(110,175,255,1) 100%); 
   background: -ms-linear-gradient(bottom, rgba(249,251,240,1) 10%, rgba(215,253,254,1) 20%, rgba(167,222,253,1) 40%, rgba(110,175,255,1) 100%); 
   background: linear-gradient(bottom, rgba(249,251,240,1) 10%, rgba(215,253,254,1) 20%, rgba(167,222,253,1) 40%, rgba(110,175,255,1) 100%); 
   opacity: 0.52;
}

#starsContainer {
  -webkit-perspective: 350;
  -moz-perspective: 350;
  perspective: 350;
  -webkit-perspective-origin: 50% 300%;
  perspective-origin: 50% 300%;
  -moz-perspective-origin: 50% 300%;
  overflow: hidden;
  position: absolute;
  top: 0px;
  left: -50%;
  width: 200%;
  height: 50%;
  z-index: 10000;
  opacity: 0;
  display:none;
}

#stars {
  background-repeat: repeat;
  background: url(stars.jpg);
  position: absolute;
  width: 200%;
  height: 200%;
  left: -50%;
  bottom: 0px;
  opacity: 0.5;
    -webkit-transform: rotateX(-90eg); 
    transform: rotateX(-90deg);
    -moz-transform: rotateX(-90deg);
    -ms-transform: rotateX(-90deg);
}

#mountainRange {
  position: absolute;
  left: 0px;
  width: 100%;
  bottom: 50%;
  display:none;
  z-index: 999;
}

.star {
   position: absolute;
   display: block;
   color: #fff;
   width: 0px;
   height: 0px;
   border-right:  10px solid transparent;
   border-bottom: 7px  solid #fff;
   border-left:   10px solid transparent;
   -moz-transform:    rotate(35deg);
   -webkit-transform: rotate(35deg);
   -ms-transform:     rotate(35deg);
   -o-transform:      rotate(35deg);
   z-index: 999;
   opacity: 0.09;
   display:none;
}

.star:before {
   border-bottom: 8px solid #fff;
   border-left: 3px solid transparent;
   border-right: 3px solid transparent;
   position: absolute;
   height: 0;
   width: 0;
   top: -5px;
   left: -6px;
   display: block;
   content: '';
   -webkit-transform: rotate(-35deg);
   -moz-transform:    rotate(-35deg);
   -ms-transform:     rotate(-35deg);
   -o-transform:      rotate(-35deg);
}
.star:after {
   position: absolute;
   display: block;
   color: #fff;
   top: 0px;
   left: -10px;
   width: 0px;
   height: 0px;
   border-right: 10px solid transparent;
   border-bottom: 7px solid #fff;
   border-left: 10px solid transparent;
   -webkit-transform: rotate(-70deg);
   -moz-transform:    rotate(-70deg);
   -ms-transform:     rotate(-70deg);
   -o-transform:      rotate(-70deg);
   content: '';
}

#mountain {
  border-bottom: 100px solid #000;
  border-right: 100px solid transparent;
  border-width-right: 50%;
  width: 0px;
  height: 0px;
  position: absolute;
  left: 0px;
  bottom: 50%;
  z-index: 999;
}

#horizon {
  cursor: pointer;
  position: absolute;
  top: 0px;
  left: 0;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat;  
  z-index: 5; 
   background: -webkit-linear-gradient(bottom, rgba(212,87,43,0.9) 0%, rgba(246,149,52,0.8) 20%,rgba(24,75,106,0) 100%);
   background: -moz-linear-gradient(bottom, rgba(212,87,43,0.9) 0%, rgba(246,149,52,0.8) 20%,rgba(24,75,106,0) 100%);
   background: -ms-linear-gradient(bottom, rgba(212,87,43,0.9) 0%, rgba(246,149,52,0.8) 20%,rgba(24,75,106,0) 100%);
   background: linear-gradient(bottom, rgba(212,87,43,0.9) 0%, rgba(246,149,52,0.8) 20%,rgba(24,75,106,0) 100%);
   opacity: 0.99;
}

#horizonNight {
  cursor: pointer;
  position: absolute;
  top: 0px;
  left: 0;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat;  
  z-index: 10000; 
  background: -webkit-linear-gradient(bottom, rgba(57,167,255,1) 0%, rgba(13,98,245,1) 20%,rgba(0,11,22,0.1) 60%);
  background: -moz-linear-gradient(bottom, rgba(57,167,255,1) 0%, rgba(13,98,245,1) 20%,rgba(0,11,22,0.1) 60%);
  background: -ms-linear-gradient(bottom, rgba(57,167,255,1) 0%, rgba(13,98,245,1) 20%,rgba(0,11,22,0.1) 60%);
  background: linear-gradient(bottom, rgba(57,167,255,1) 0%, rgba(13,98,245,1) 20%,rgba(0,11,22,0.1) 60%);
  opacity: 0;
}

#darknessOverlaySky {
  background-color: #000;
  opacity: 0;
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  z-index: 9999;
}

#darknessOverlay {
  cursor: default;
  background-color: #000;
  opacity: 0;
  position: absolute;
  bottom: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  z-index: 99;
}

#waterDistance {
  position: absolute;
  bottom: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat; 
   background: -webkit-linear-gradient(90deg, rgba(0,0,0,0.0) 10%,rgba(0,0,0,0.20) 44%,rgba(0,0,0,0.65) 95%,rgba(0,0,0,0.62) 100%);  
   background: -moz-linear-gradient(90deg, rgba(0,0,0,0.0) 10%,rgba(0,0,0,0.20) 44%,rgba(0,0,0,0.65) 95%,rgba(0,0,0,0.62) 100%); 
   background: -ms-linear-gradient(90deg, rgba(0,0,0,0.0) 10%,rgba(0,0,0,0.20) 44%,rgba(0,0,0,0.65) 95%,rgba(0,0,0,0.62) 100%); 
  z-index: 20;
}

#water {
  overflow: hidden;
  position: absolute;
  bottom: 0px;
  left: 0px;
  width: 100%;
  height: 50%;
  background-repeat: no-repeat;   
    background: -webkit-linear-gradient(bottom, rgba(0,25,45,1) 0%,rgba(14,71,117,1) 35%, rgba(26,126,174,1) 70%, rgba(62,168,220,1) 100%); 
    background: -moz-linear-gradient(bottom, rgba(0,25,45,1) 0%,rgba(14,71,117,1) 35%, rgba(26,126,174,1) 70%, rgba(62,168,220,1) 100%); 
    background: -ms-linear-gradient(bottom, rgba(0,25,45,1) 0%,rgba(14,71,117,1) 35%, rgba(26,126,174,1) 70%, rgba(62,168,220,1) 100%); 
    background: linear-gradient(bottom, rgba(0,25,45,1) 0%,rgba(14,71,117,1) 35%, rgba(26,126,174,1) 70%, rgba(62,168,220,1) 100%);

z-index: 10;
}

#waterReflectionContainer {
  -webkit-perspective: 30;
  perspective: 30;
  -webkit-perspective-origin: 50% -12%;
  perspective-origin: 50% -12%;
  overflow: hidden;
  position: absolute;
  top: 50%;
  left: -3%;
  width: 103%;
  height: 50%;
  z-index: 25;
}

#waterReflectionMiddle {
  position: absolute;
  top: 0px;
  left: -50%;
  width: 200%;
  height: 55%;
  background-repeat: no-repeat;   
   background: -webkit-radial-gradient(50% 0px, rgba(247,177,72,1) 3%,rgba(248,175,65,1) 6%,rgba(207,62,30,0.4) 35%,rgba(176,91,48,0.1) 45%,rgba(141,88,47,0.0) 60%,rgba(116,82,63,0.0) 70%,rgba(44,65,68,0.0) 80%,rgba(7,19,31,0.0) 100%); 
   background: -moz-radial-gradient(50% 0px, rgba(247,177,72,1) 3%,rgba(248,175,65,1) 6%,rgba(207,62,30,0.4) 35%,rgba(176,91,48,0.1) 45%,rgba(141,88,47,0.0) 60%,rgba(116,82,63,0.0) 70%,rgba(44,65,68,0.0) 80%,rgba(7,19,31,0.0) 100%); 
   background: -ms-radial-gradient(50% 0px, rgba(247,177,72,1) 3%,rgba(248,175,65,1) 6%,rgba(207,62,30,0.4) 35%,rgba(176,91,48,0.1) 45%,rgba(141,88,47,0.0) 60%,rgba(116,82,63,0.0) 70%,rgba(44,65,68,0.0) 80%,rgba(7,19,31,0.0) 100%); 
   
  z-index: 999;
  opacity: 0.7;
  -webkit-transform: rotateX(45deg); 
}

#waterReflectionMiddleThin {
  position: absolute;
  bottom: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
  background-repeat: no-repeat;   
   background: -webkit-linear-gradient(left, rgba(69,70,61,0.0) 3%,rgba(216,100,38,0.10) 32%,rgba(252,176,48,0.35) 35%,rgba(253,215,79,1) 45%,rgba(253,254,225,1) 48%,rgba(253,254,225,1) 52%, rgba(024,194,214,1) 55%, rgba(034,204,234,0.10) 65%, rgba(034,204,234,0.10) 60%, rgba(034,204,234,0.0) 97%); 
   background: -moz-linear-gradient(left, rgba(69,70,61,0.0) 3%,rgba(216,100,38,0.10) 32%,rgba(252,176,48,0.35) 35%,rgba(253,215,79,1) 45%,rgba(253,254,225,1) 48%,rgba(253,254,225,1) 52%, rgba(024,194,214,1) 55%, rgba(034,204,234,0.10) 65%, rgba(034,204,234,0.10) 60%, rgba(034,204,234,0.0) 97%); 
   background: -ms-linear-gradient(left, rgba(69,70,61,0.0) 3%,rgba(216,100,38,0.10) 32%,rgba(252,176,48,0.35) 35%,rgba(253,215,79,1) 45%,rgba(253,254,225,1) 48%,rgba(253,254,225,1) 52%, rgba(024,194,214,1) 55%, rgba(034,204,234,0.10) 65%, rgba(034,204,234,0.10) 60%, rgba(034,204,234,0.0) 97%); 
   background: linear-gradient(left, rgba(69,70,61,0.0) 3%,rgba(216,100,38,0.10) 32%,rgba(252,176,48,0.35) 35%,rgba(253,215,79,1) 45%,rgba(253,254,225,1) 48%,rgba(253,254,225,1) 52%, rgba(024,194,214,1) 55%, rgba(034,204,234,0.10) 65%, rgba(034,204,234,0.10) 60%, rgba(034,204,234,0.0) 97%);

z-index: 999;

-webkit-transform: rotateX(45deg);
  -moz-transform: rotateX(45deg);
  -ms-transform: rotateX(45deg);
  transform: rotateX(45deg);
}

#division {
  height: 5px;
  width: 100%;
  position: absolute;
  top: 50%;
  bottom: 50%;
  background-color: rgba(000,14,24,0.0);
  z-index: 9999;
  cursor: ns-resize;
}

#coor {
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: 999;
  color: #fff;
}

#oceanRipple {
  background-image: repeating-linear-gradient(175deg,rgba(165,165,165,0.08) 43%, rgba(175,175,175,0.08) 45%, rgba(235,235,235,0.08) 49%, rgba(195,195,195,0.08) 50%, rgba(165,165,165,0.08) 54%);
  opacity: 0.5;
  position: absolute;
  left: 0%;
  bottom: 0px;
  width: 100%;
  height: 50%;
  z-index: 10;
}
</style>

document.addEventListener('mousemove', function(e){ 
    mouse.x = e.clientX || e.pageX; 
    mouse.y = e.clientY || e.pageY 
      updateDimensions();

//if(mouseIsDown) {
       document.getElementById("sun").style.background = '-webkit-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(242,248,247,1) 0%,rgba(249,249,28,1) 3%,rgba(247,214,46,1) 8%, rgba(248,200,95,1) 12%,rgba(201,165,132,1) 30%,rgba(115,130,133,1) 51%,rgba(46,97,122,1) 85%,rgba(24,75,106,1) 100%)';
      document.getElementById("sun").style.background = '-moz-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(242,248,247,1) 0%,rgba(249,249,28,1) 3%,rgba(247,214,46,1) 8%, rgba(248,200,95,1) 12%,rgba(201,165,132,1) 30%,rgba(115,130,133,1) 51%,rgba(46,97,122,1) 85%,rgba(24,75,106,1) 100%)';
      document.getElementById("sun").style.background = '-ms-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(242,248,247,1) 0%,rgba(249,249,28,1) 3%,rgba(247,214,46,1) 8%, rgba(248,200,95,1) 12%,rgba(201,165,132,1) 30%,rgba(115,130,133,1) 51%,rgba(46,97,122,1) 85%,rgba(24,75,106,1) 100%)';

document.getElementById("sunDay").style.background = '-webkit-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(252,255,251,0.9) 0%,rgba(253,250,219,0.4) 30%,rgba(226,219,197,0.01) 70%, rgba(226,219,197,0.0) 70%,rgba(201,165,132,0) 100%)';
      document.getElementById("sunDay").style.background = '-moz-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(252,255,251,0.9) 0%,rgba(253,250,219,0.4) 30%,rgba(226,219,197,0.01) 70%, rgba(226,219,197,0.0) 70%,rgba(201,165,132,0) 100%)';
      document.getElementById("sunDay").style.background = '-ms-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(252,255,251,0.9) 0%,rgba(253,250,219,0.4) 30%,rgba(226,219,197,0.01) 70%, rgba(226,219,197,0.0) 70%,rgba(201,165,132,0) 100%)';

document.getElementById("sunSet").style.background = '-webkit-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(254,255,255,0.8) 5%,rgba(236,255,0,1) 10%,rgba(253,50,41,1) 25%, rgba(243,0,0,1) 40%,rgba(93,0,0,1) 100%)';
      document.getElementById("sunSet").style.background = '-moz-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(254,255,255,0.8) 5%,rgba(236,255,0,1) 10%,rgba(253,50,41,1) 25%, rgba(243,0,0,1) 40%,rgba(93,0,0,1) 100%)';
      document.getElementById("sunSet").style.background = '-ms-radial-gradient(' + mouse.x + 'px ' + mouse.y + 'px, circle, rgba(254,255,255,0.8) 5%,rgba(236,255,0,1) 10%,rgba(253,50,41,1) 25%, rgba(243,0,0,1) 40%,rgba(93,0,0,1) 100%)';

document.getElementById("waterReflectionContainer").style.perspectiveOrigin = (mouse.x/myWidth*100).toString() + "% -15%";
      document.getElementById("waterReflectionMiddle").style.left = (mouse.x-myWidth-(myWidth*.03)).toString() + "px";

var bodyWidth = document.getElementsByTagName("body")[0].clientWidth;

document.getElementById("sun").style.width = (bodyWidth);
      document.getElementById("sun").style.left = "0px";
      document.getElementById("sunDay").style.width = (bodyWidth);
      document.getElementById("sunDay").style.left = "0px";
      
      var sky = document.getElementById("sun");
      var water = document.getElementById("water");
      var waterHeight = water.clientHeight;
      var skyHeight = sky.clientHeight;
      var skyRatio = mouse.y / skyHeight;
      var waterRatio = waterHeight / myHeight;
      document.getElementById("darknessOverlay").style.opacity = Math.min((mouse.y-(myHeight/2)) / (myHeight/2), 1);
      document.getElementById("darknessOverlaySky").style.opacity = Math.min((mouse.y-(myHeight*7/10)) / (myHeight-(myHeight*7/10)), 1);
      document.getElementById("moon").style.opacity = Math.min((mouse.y-(myHeight*9/10)) / (myHeight-(myHeight*9/10)), 0.65);
      document.getElementById("horizonNight").style.opacity = (mouse.y-(myHeight*4/5)) / (myHeight-(myHeight*4/5));

document.getElementById("starsContainer").style.opacity = (mouse.y/myHeight-0.6);

document.getElementById("waterDistance").style.opacity = (mouse.y/myHeight+0.6);
      document.getElementById("sunDay").style.opacity = (1-mouse.y/myHeight);
      document.getElementById("sky").style.opacity = Math.min((1-mouse.y/myHeight), 0.99);

document.getElementById("sunSet").style.opacity = (mouse.y/myHeight-0.2);

if(mouse.y > 0) {
        var clouds = document.getElementsByClassName("cloud");
        for(var i=0; i<clouds.length; i++) {
          clouds[i].style.left = Math.min(myWidth*(Math.pow(mouse.y,2)/Math.pow(myHeight/2,2)) * -1, 0);
        }
      //}

var stars = document.getElementsByClassName('star');
      for(var i=0; i<stars.length; i++) {
        stars[i].style.opacity = (mouse.y/myHeight-0.6);
      }

if(mouse.y > myHeight/2) {
        document.getElementById("sun").style.opacity = Math.min((myHeight-mouse.y) / (myHeight/2) + 0.2, 0.5);
        document.getElementById("horizon").style.opacity = (myHeight-mouse.y) / (myHeight/2) + 0.2;

document.getElementById("waterReflectionMiddle").style.opacity = (myHeight-mouse.y) / (myHeight/2) - 0.1;
      } else {
        document.getElementById("horizon").style.opacity = Math.min(mouse.y / (myHeight/2), 0.99);

document.getElementById("sun").style.opacity = Math.min(mouse.y / (myHeight/2), 0.5);
        document.getElementById("waterReflectionMiddle").style.opacity = mouse.y / (myHeight/2) - 0.1; 
      }

} else if (mouseIsDownDivision) {
      var sunElement = document.getElementById("sun");
      var water = document.getElementById("water");
      var division = document.getElementById("division");
      sunElement.style.height = (mouse.y).toString() + "px";
      document.getElementById("sunDay").style.height = (mouse.y).toString() + "px";
      division.style.top = (mouse.y).toString() + "px";
      var waterHeight = myHeight-mouse.y;
      water.style.height = waterHeight.toString() + "px";

document.getElementById("sun").style.height = (mouse.y).toString() + "px";
      document.getElementById("sunDay").style.height = (mouse.y).toString() + "px";
      document.getElementById("horizon").style.height = (mouse.y).toString() + "px";
      document.getElementById("waterDistance").style.height = (myHeight-mouse.y).toString() + "px";
      document.getElementById("oceanRippleContainer").style.height = (myHeight-mouse.y).toString() + "px";
      document.getElementById("darknessOverlay").style.height = (myHeight-mouse.y).toString() + "px";
    }

}, false);

function updateDimensions() {
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {

myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {

myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  
}

function startMove() {
  mouseIsDown = true;
}

function stopMove() {
  mouseIsDown = false;
  mouseIsDownDivision = false;
        var sky = document.getElementById("sun");
}

function startDraggingDivision() {

mouseIsDownDivision = true;
}

function windowResize() {
  updateDimensions();
  var skyHeight = document.getElementById("horizon").clientHeight;

// update to new sky height
  skyHeight = document.getElementById("sun").clientHeight;
  document.getElementById("waterDistance").style.height = myHeight - skyHeight;
   document.getElementById("division").style.top = skyHeight;
}
</script>

CSS Sunset Sunrise

Random HTML Example Codes: