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HTML 

              
                <!-- from https://dribbble.com/shots/1136439-Little-Gears-Preloader-GIF -->

<div class="c-container">
  <div class="c-animation">
    <div class="c-gear">
      <svg xmlns="http://www.w3.org/2000/svg" width="26.531" height="27.063" viewBox="0 0 26.531 27.063" class="gear gear1" gear-status="start" gear-duration="start" id="gear1">
  <path id="gear_01" class="cls-1" d="M198.092,158.179q0.357-.641.661-1.3,0.222-.477.418-0.9,3.816-.013,3.96-0.919,0.169-.837-3.4-2.1a6.677,6.677,0,0,0-.167-2.153q3.546-1.968,3.258-2.791-0.314-.893-4.228-0.071a11.459,11.459,0,0,0-1.128-1.677l0.064-.137q2.158-3.42,1.488-4.018t-3.752,2.039l-0.185.15a9.378,9.378,0,0,0-.853-0.457l-0.646-.3c0-.079,0-0.159,0-0.238q0.248-4.134-.62-4.312t-2.354,3.733l-0.086.186a7.084,7.084,0,0,0-1.987.166l-0.076-.085q-1.82-3.552-2.659-3.314-0.816.309-.245,4.253a0.663,0.663,0,0,0,.027.19,12.412,12.412,0,0,0-1.83,1.271l-0.04-.018q-3.377-2.143-3.978-1.45-0.588.641,1.936,3.774a0.409,0.409,0,0,1,.119.114,10.411,10.411,0,0,0-.488.924q-0.217.468-.389,0.959a0.394,0.394,0,0,1-.165-0.017q-4.016-.032-4.16.875t3.578,2.188l0.181,0.084a5.929,5.929,0,0,0,.152,1.734q-3.553,1.963-3.288,2.835,0.312,0.893,4.224.079a12.645,12.645,0,0,0,1.062,1.695q-2.049,3.3-1.416,3.885t3.64-1.924q0.577,0.328,1.176.607l0.552,0.257q-0.185,3.877.694,4.051,0.82,0.156,2.243-3.371a8.914,8.914,0,0,0,2.283-.205q1.744,3.34,2.56,3.032,0.793-.26.206-4.045a10.456,10.456,0,0,0,1.674-1.06q3.159,1.994,3.785,1.371Q200.433,161.108,198.092,158.179Zm-5.784.984a6.375,6.375,0,0,1-5.14-.152,6.265,6.265,0,0,1-3.423-3.838,6.608,6.608,0,0,1,.271-5.156,6.684,6.684,0,0,1,3.8-3.58,6.264,6.264,0,0,1,5.14.152,6.37,6.37,0,0,1,3.423,3.837,6.676,6.676,0,0,1-.3,5.212A6.6,6.6,0,0,1,192.308,159.163Z" transform="translate(-176.594 -139)"/>
</svg>

      <svg xmlns="http://www.w3.org/2000/svg" width="20.781" height="20.719" viewBox="0 0 20.781 20.719" class="gear gear2" id="gear2">
  <path id="gear_02" class="cls-1" d="M219.36,157.318q2.136-2.3,1.607-3.025t-3.368.619c-0.158.074-.313,0.145-0.466,0.215a7.273,7.273,0,0,0-2.026-1.166c-0.015-.194-0.024-0.374-0.027-0.541q-0.105-3.184-.979-3.284-0.906-.139-1.968,2.793c-0.072.179-.15,0.381-0.233,0.6a7.335,7.335,0,0,0-2.076.538,4.6,4.6,0,0,1-.5-0.437q-2.31-2.13-3.031-1.6t0.619,3.368q0.135,0.271.3,0.583a5.671,5.671,0,0,0-1.174,1.842q-0.357.018-.646,0.04-3.187.117-3.327,1.022-0.1.874,2.9,1.942a2.709,2.709,0,0,0,.507.188,6.56,6.56,0,0,0,.489,2.355,1.787,1.787,0,0,0-.327.3q-2.134,2.3-1.606,3.024t3.368-.619a1.41,1.41,0,0,0,.312-0.165,7.416,7.416,0,0,0,2.136,1.4c0.009,0.071.021,0.144,0.033,0.219q0.117,3.188,1.017,3.32,0.864,0.169,1.937-2.834a0.666,0.666,0,0,0,.057-0.168,6.868,6.868,0,0,0,2.656-.583,0.2,0.2,0,0,1,.126.087q2.309,2.142,3.03,1.614t-0.617-3.381a0.513,0.513,0,0,1-.082-0.183,7.414,7.414,0,0,0,1.388-2.315,0.285,0.285,0,0,1,.184-0.008q3.12-.122,3.286-0.992,0.144-.9-2.866-1.966a0.77,0.77,0,0,0-.232-0.073,7.445,7.445,0,0,0-.663-2.418C219.183,157.532,219.271,157.426,219.36,157.318Zm-2.053,4.1a4.914,4.914,0,0,1-.538,1.63,5.154,5.154,0,0,1-1.377,1.494,4.931,4.931,0,0,1-1.732.835l-0.025-.034a4.727,4.727,0,0,1-1.75.047,4.493,4.493,0,0,1-3.135-1.844,4.7,4.7,0,0,1-.867-3.62,4.452,4.452,0,0,1,1.867-3.088,4.628,4.628,0,0,1,3.555-.883,4.79,4.79,0,0,1,3.149,1.949A4.573,4.573,0,0,1,217.307,161.419Z" transform="translate(-202.063 -150.125)"/>
</svg>

      <svg xmlns="http://www.w3.org/2000/svg" width="16.688" height="17.688" viewBox="0 0 16.688 17.688" class="gear gear3" id="gear3">
    <path id="gear_03" class="cls-1" d="M210.045,131.931a5.318,5.318,0,0,0-1.057.161,9.331,9.331,0,0,0-1-.909q-0.417-.325-0.812-0.576a8.012,8.012,0,0,0-.124-0.947q-0.3-2.691-1.2-2.8-0.956-.145-1.9,2.429a7.584,7.584,0,0,0-.273.773,5.746,5.746,0,0,0-2.131.852q-0.56-.3-1.035-0.536-2.48-1.074-3.024-.376-0.576.739,1.1,2.841a10.53,10.53,0,0,0,.787.942,6.043,6.043,0,0,0-.182,2.112,7.21,7.21,0,0,0-.89.631q-2.235,1.5-1.863,2.388,0.328,0.844,2.973.529c0.388-.052.814-0.117,1.275-0.194a5.607,5.607,0,0,0,.589.527,6.2,6.2,0,0,0,.97.621q0.056,0.7.131,1.36,0.33,2.636,1.209,2.789,0.939,0.077,1.89-2.422,0.255-.662.468-1.357a5.329,5.329,0,0,0,1.6-.609,10.027,10.027,0,0,0,.985.44q2.49,1.149,3.066.409,0.544-.7-1.142-2.874-0.309-.376-0.652-0.78a4.564,4.564,0,0,0,.255-1.783,7.919,7.919,0,0,0,1.1-.727q2.193-1.53,1.863-2.388T210.045,131.931Zm-2.1,3.118a3.2,3.2,0,0,1-.662,2.463,3.263,3.263,0,0,1-2.262,1.283,3.211,3.211,0,0,1-2.459-.662,3.389,3.389,0,0,1-.6-4.769,3.2,3.2,0,0,1,2.229-1.241,3.287,3.287,0,0,1,2.509.7A3.216,3.216,0,0,1,207.943,135.049Z" transform="translate(-196.375 -126.875)"/>
  </svg>
    </div>

  </div>

  <div class="c-controller-wrapper">
    <section class="c-controller">
      <h1>Settings</h1>
      <button class="u-btn" data-start="start" id="start">Stop</button>
    </section>
  </div>

</div>
<!-- logo grid for design credits -->
<a href="https://dribbble.com/shots/1136439-Little-Gears-Preloader-GIF" target="_blank" rel="noreferrer noopener">
  <div class="u-logo">
    Gear Design from
    <span class="u-logo__text">Dribbble</span>
    <svg xmlns="http://www.w3.org/2000/svg" width="132" class="u-logo__svg" height="32" viewBox="0 0 132 32" fill="none">
<rect width="131.556" height="32" fill="white" fill-opacity="0"></rect>
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</svg>
  </div>
</a>
!

CSS 

              
                //text color
$bg: linear-gradient(180deg,#8AC7D0, #67B6C2)
$text: rgb(66, 66, 66)
$btn: rgb(0, 87, 183)

//mobile query based on bootstrap
$phone: "only screen and (min-width : 576px)"
$tablet: "only screen and (min-width : 768px)"
$laptop: "only screen and (min-width : 992px)"
$desktop: "only screen and (min-width : 1200px)"
  
@mixin flex-center
  display: flex
  justify-content: center
  align-items: center
  flex-direction: row

body
  font-family: 'Lato', sans-serif
  width: 100%
  height: 100vh
  min-height: 100%
  background: rgb(25,25,25)
  @include flex-center
    
a
  color: white
  
*
  box-sizing: border-box
  
.c-container
  // background: white
  width: 100%
  max-width: 90vw
  min-height: 200px
  border-radius: 2em
  @include flex-center
  flex-direction: column
  align-items: stretch
  @media #{$tablet}
    flex-direction: row
    max-width: 50vw
    width: 100%
  
.c-controller-wrapper
  margin: auto
  background-color: white
  width: 100%
  @media #{$tablet}
    width: 50%
  
.c-controller
  width: 100%
  min-height: 200px
  padding: 1em
  margin: auto
  h1
    font-size: 1.5em
    margin: 0 0 0.8em 0
    
.c-speed-text
  font-size: 0.8em
  text-align: right
    
.c-controller-group
  padding: 1em 0
  label
    margin-right: 0.5em
    font-weight: bold
    display: block
  
.c-animation
  @include flex-center
  background: $bg
  width: 100%
  min-height: 200px
  @media #{$tablet}
    width: 50%
    height: auto
    min-height: initial
  
.c-gear
  position: relative
  width: 50px
  height: 50px
  margin: auto
  
.gear
  fill: white
  
.gear1
  position: absolute
  left: 10%
  top: 37%
  
  
.gear2
  position: absolute
  top: 50%
  left: 65%
  
.gear3
  position: absolute
  top: 8%
  left: 45%
    

//loading and tick svg settings
.u-hide
  display: none

.u-logo
  position: absolute
  right: 1em
  bottom: 1em
  color: white
  &__svg
    margin-left: 0.5em
    display: none
    @media #{$tablet}
      display: inline-block
  &__text
    display: inline-block
    @media #{$tablet}
      display: none
      
  &:hover
    opacity: 0.9
    cursor: pointer
.u-btn
  padding: 0.5em 1em
  background: #67B6C2
  color: white
  border: 0
  transition: ease 400ms
  will-change: transform
  cursor: pointer
  &:hover
    opacity: 0.9
  
  
  //range
input[type="range"] 
    -webkit-appearance: none
    width: 100%
    height: 15px
    border-radius: 5px   
    background: #d3d3d3
    outline: none
    opacity: 0.7
    transition: opacity .2s
    margin-top: 0.5em
  
  
input[type="range"]::-webkit-slider-thumb 
    -webkit-appearance: none
    appearance: none
    width: 25px
    height: 25px
    border-radius: 50% 
    background: #67B6C2
    cursor: pointer
  
input[type="range"]::-moz-range-thumb 
    width: 25px
    height: 25px
    border-radius: 50%
    background: #67B6C2
    cursor: pointer
!

JS 

              
                (() => {
  const rotate = [
    { transform: "rotate(0deg)" },
    { transform: "rotate(360deg)" }
  ];

  const blink = [
    { transform: "rotate(0deg)", opacity: 1, offset: 0 },
    { opacity: 0, offset: 0.3 },
    { opacity: 1, offset: 0.5 },
    { opacity: 0, offset: 0.7 },
    { opacity: 1, offset: 0.9 },
    { transform: "rotate(360deg)", opacity: 1, offset: 1 }
  ];

  let gear1 = {
    duration: 1500,
    iterations: Infinity
  };

  
  function setStart() {
    const btn = document.getElementById("start");
    const status = document.getElementById("start").getAttribute("data-start");
    if (status === "stop") {
      //start all animations
      list.forEach(item => item.play());
      btn.setAttribute("data-start", "start");
      btn.innerText = "Stop";
    } else {
      //stop all animations
      list.forEach(item => item.pause());
      btn.setAttribute("data-start", "stop");
      btn.innerText = "Start";
    }
  }

  let firstGear = document.getElementById("gear1").animate(blink, gear1);
  const list = [firstGear];

  document.getElementById("start").addEventListener("click", setStart);

})();
!
999px

Console