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HTML 

              
                <div class='preloader-container'>
  <div class='preloader'>
    <div class='preloader-dots'>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
    </div>
    <div class='description'>The dotwave</div>
  </div>
  <div class='preloader'>
    <div class='preloader-squares'>
      <div class='square'></div>
      <div class='square'></div>
      <div class='square'></div>
      <div class='square'></div>
    </div>
    <div class='description'>The center-squares</div>
  </div>
  <div class='preloader'>
  <div class='preloader-pulse'>
    <div class='pulse-center'></div>
    <div class='pulse-explosion'></div>
  </div>
  <div class='description'>The excited little dot</div>
  </div>
    <div class='preloader'>
  <div class='preloader-chasing-squares'>
      <div class='square'></div>
      <div class='square'></div>
      <div class='square'></div>
      <div class='square'></div>
  </div>
      <div class='description'>The chasing squares</div>
</div>
      <div class='preloader full-width'>
    <div class='preloader-dotline'>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>      
  </div>
      <div class='description'>The dotline</div>
</div>
   <div class='preloader full-width'>
    <div class='preloader-pacman'>
      <div class='pacman'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div>
      <div class='dot'></div> 
      <div class='ghost'></div>
  </div>
      <div class='description'>The pacman ;-)</div>
</div>
      <div class='footer'>More fun at <a href='http://www.selftaughtjs.com' target='_blank'>www.selftaughtjs.com</a></div>

</div>
!

CSS 

              
                body,
html,
.preloader-container {
  height: 100%;
  margin: 0;
  background: #ccc;
  color: #666;
  font-family: open sans;
  padding: 0;
}
a,a:active {
  color:#000;
  transition: color .2s ease;
}
a:hover {
  color:tomato;
  transition: color .2s ease;
}

/* Containers */
.footer {

}
.preloader.full-width {
  width: 100%;
  height: 120px;
  margin-left: 0px;
  margin-right: 0px;
}

.preloader {
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50%;
  width: 45%;
  margin: 5%;
  border: 1px solid #ddd;
  position: relative;
}

.description {
  position: absolute;
  bottom: 10px;
  left: 12px;
}

.preloader-container {
  cursor: default;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}


/* Preloader #1 */

.preloader-dots {
  height: 50px;
  width: 80px;
}

.preloader-dots .dot {
  display: inline-block;
  background: #666;
  height: 8px;
  width: 8px;
  opacity: 0.3;
  border-radius: 50%;
  animation: moveit 1.8s infinite;
}

.dot:nth-child(2) {
  animation-delay: .15s;
}

.dot:nth-child(3) {
  animation-delay: .3s;
}

.dot:nth-child(4) {
  animation-delay: .45s;
}

.dot:nth-child(5) {
  animation-delay: .6s;
}

@keyframes moveit {
  0% {
    transform: translateY(0px);
  }
  35% {
    transform: translateY(0px);
    opacity: 0.3;
  }
  50% {
    transform: translateY(-20px);
    opacity: 0.8;
  }
  70% {
    transform: translateY(3px);
    opacity: 0.8;
  }
  85% {
    transform: translateY(-3px);
  }
}


/* Preloader #2 */

.preloader-squares .square {
  display: inline-block;
  width: 15px;
  height: 15px;
  background: #666;
  opacity: 0.2;
  animation: movein 2s infinite;
}

.preloader-squares {
  width: 50px;
  line-height: 19px;
  height: 50px;
}

.square {
  opacity: 0.5;
}

.preloader-squares .square:nth-child(1) {
  transform: translate(0, -25px)
}

.preloader-squares .square:nth-child(2) {
  transform: translate(25px, 0)
}

.preloader-squares .square:nth-child(3) {
  transform: translate(-25px, 0)
}

.preloader-squares .square:nth-child(4) {
  transform: translate(0, 25px)
}

@keyframes movein {
  33% {
    transform: translate(0, 0);
    opacity: 0.7;
  }
  66% {
    transform: translate(0, 0);
    opacity: 0.7;
  }
}


/*Preloader #3*/

.pulse-center {
  background: #666;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
  position: absolute;
  opacity: 0.8;
  z-index: 5;
}

.pulse-explosion {
  content: '';
  width: 15px;
  height: 15px;
  background: #ccc;
  border-radius: 50%;
  position: absolute;
  animation: pulse-radius 1.5s infinite;
  z-index: 1;
}

@keyframes pulse {
  30% {
    transform: scale(0.7);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.1);
    opacity: 1.0;
  }
  70% {
    transform: scale(0.8);
    opacity: 0.8;
  }
}

@keyframes pulse-radius {
  30% {
    transform: scale(0.7);
    opacity: 1;
  }
  40% {
    transform: scale(7.8);
    opacity: 0.1;
  }
  80% {
    transform: scale(4.8);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 0;
  }
}


/*Preloader #4*/

.preloader-chasing-squares {
  width: 50px;
  height: 50px;
  line-height: 19px;
}

.preloader-chasing-squares .square {
  display: inline-block;
  width: 15px;
  height: 15px;
  opacity: 1;
  background: #666;
}

.preloader-chasing-squares .square {
  animation: focusfade 2.8s infinite;
}

.preloader-chasing-squares .square:nth-child(1) {}

.preloader-chasing-squares .square:nth-child(2) {
  animation-delay: .7s;
}

.preloader-chasing-squares .square:nth-child(3) {
  animation-delay: 2.1s;
}

.preloader-chasing-squares .square:nth-child(4) {
  animation-delay: 1.4s;
}

@keyframes focusfade {
  0% {
    opacity: 0.5;
    background: #000;
  }
  30% {
    opacity: 0.5;
    background: #666;
  }
  60% {
    opacity: 0;
  }
  75% {
    opacity: 0;
  }
  100% {
    opacity: 0.5;
    background: #000;
  }
}


/* preloader 5 */

.preloader-dotline .dot {
  display: inline-block;
  background: #666;
  height: 5px;
  width: 5px;
  opacity: 0;
  border-radius: 50%;
  animation: dotline-move 4s infinite;
  transform: translateX(-300px)
}

.preloader-dotline .dot:nth-child(1) {
  animation-delay: .8s;
}

.preloader-dotline .dot:nth-child(2) {
  animation-delay: .7s;
}

.preloader-dotline .dot:nth-child(3) {
  animation-delay: .6s;
}

.preloader-dotline .dot:nth-child(4) {
  animation-delay: .5s;
}

.preloader-dotline .dot:nth-child(5) {
  animation-delay: .4s;
}

.preloader-dotline .dot:nth-child(6) {
  animation-delay: .3s;
}

.preloader-dotline .dot:nth-child(7) {
  animation-delay: .2s;
}

.preloader-dotline .dot:nth-child(8) {
  animation-delay: .1s;
}

@keyframes dotline-move {
  40% {
    transform: translateX(0px);
    opacity: 0.8;
  }
  100% {
    transform: translateX(300px);
    opacity: 0;
  }
}


/* preloader pacman */

.preloader-pacman .dot {
  display: inline-block;
  background: #666;
  height: 5px;
  width: 5px;
  margin-right: 20px;
  opacity: 0.7;
  border-radius: 50%;
  animation: fade-out 14s linear infinite;
}

.preloader-pacman .pacman {
  display: inline-block;
  background: #666;
  height: 20px;
  vertical-align: bottom;
  width: 20px;
  margin-right: 20px;
  opacity: 1;
  border-radius: 50%;
  position: relative;
  animation: move-forward 14s linear infinite;
  transform: translateX(-40px);
}

.preloader-pacman .dot:nth-child(1) {
  animation-delay: .4s;
}

.preloader-pacman .dot:nth-child(2) {
  animation-delay: .8s;
}

.preloader-pacman .dot:nth-child(3) {
  animation-delay: 1.2s;
}

.preloader-pacman .dot:nth-child(4) {
  animation-delay: 1.6s;
}

.preloader-pacman .dot:nth-child(5) {
  animation-delay: 2.0s;
}

.preloader-pacman .dot:nth-child(6) {
  animation-delay: 2.4s;
}

.preloader-pacman .dot:nth-child(7) {
  animation-delay: 2.8s;
}

.preloader-pacman .dot:nth-child(8) {
  animation-delay: 3.2s;
}

.preloader-pacman .dot:nth-child(9) {
  animation-delay: 3.6s;
}

.preloader-pacman .dot:nth-child(10) {
  animation-delay: 4.0s;
}

.preloader-pacman .dot:nth-child(11) {
  animation-delay: 4.4s;
}

.preloader-pacman .dot:nth-child(12) {
  animation-delay: 4.8s;
}

.preloader-pacman .dot:nth-child(13) {
  animation-delay: 5.2s;
}

.preloader-pacman .dot:nth-child(14) {
  animation-delay: 5.6s;
}

.preloader-pacman .dot:nth-child(15) {
  animation-delay: 6.0s;
}

.preloader-pacman .dot:nth-child(16) {
  animation-delay: 6.4s;
}

.preloader-pacman .dot:nth-child(17) {
  animation-delay: 6.8s;
}

.preloader-pacman .pacman:before {
  content: '';
  display: inline-block;
  background: transparent;
  vertical-align: bottom;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  right: 0px;
  border-right: 10px solid #fff;
  opacity: 1;
  position: absolute;
  animation: eat .4s infinite;
}
.preloader-pacman .ghost {
  height: 25px;
  width:25px;
  background:#669;
  top:-22px;
  border-top-left-radius:50%;
  border-top-right-radius:50%;
  position:relative;
  transform: translateX(550px);
  animation:move-back 14s linear infinite;
  animation-delay:7s;
  opacity:0;
}
.preloader-pacman .ghost:before {
  height:5px;
  content:'';
  width:3px;
  background:#fff;
  top:7px;
  left:7px;
  z-index:10;
  position:absolute;
  
}
.preloader-pacman .ghost:after {
  height:5px;
  content:'';
  width:3px;
  background:#fff;
  top:7px;
  right:7px;
  z-index:10;
  position:absolute;
}
@keyframes eat {
  50% {
    transform: translateX(10px) scale(0.1)
  }
}
@keyframes move-back {
  3% {opacity:1}
  35% {opacity:1}
  49% {opacity:0}
  50% {transform: translateX(0px);}
}
@keyframes move-forward {
  50% {
    transform: translateX(500px);
  }
  50.1% {
    transform: translateX(500px) scaleX(-1);
    opacity: 1;
  }
  100% {
    transform: translateX(-40px) scaleX(-1);
  }
}

@keyframes fade-out {
  0% {
    opacity: 0;
  }
  40% {
    opacity: 0;
  }
  89.99% {
    opacity:0;
  }
  90% {
    opacity: 0.5;
  }
}
!

JS 

              
                //////// /// /// // / /
//
// Read the step by step guide
// on www.selftaughtjs.com/creating-custom-preloaders/
//
//////// /// /// // / /
!
999px

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