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JavaScript

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HTML 

              
                <div class="factory-1"></div>
<div class="factory-2"></div>
<div class="factory-3"></div>
<div class="factory-4"></div>
<div class="factory-5"></div>
<div class="factory-6"></div>
<div class="factory-7"></div>
<div class="factory-8"></div>
!

CSS 

              
                .factory-1 {
  width:90px;
  height:14px;
  box-shadow:0 3px 0 #fff;
  background:repeating-linear-gradient(90deg, #fff 0 14px, #0000 0 100%) 0 0/calc(100%/4) 100%;
  animation:f1 1s infinite linear;
}

@keyframes f1 {
    100% {background-position:calc(100%/3) 0}
}


.factory-2 {
  width:90px;
  height:14px;
  box-shadow:0 3px 0 #fff;
  background:linear-gradient(#fff 0 0) center/2px 100% no-repeat;
  display:grid;
}
.factory-2:before,
.factory-2:after{
  content:"";
  grid-area:1/1;
  background:repeating-linear-gradient(90deg, #fff 0 14px, #0000 0 100%) 0 0/calc(100%/4) 100%;
  clip-path:inset(0 50% 0 0);
  animation:f2 1s infinite linear;
}
.factory-2:before{
  background: radial-gradient(circle 7px at 7px 50%, #fff 92%,#0000 ) 0 0/calc(100%/4) 100%;
  clip-path:inset(0 0 0 50%);
}
@keyframes f2 {
    100% {background-position: calc(100%/3) 0}
}

.factory-3 {
  width:90px;
  height:14px;
  box-shadow:0 3px 0 #fff;
  background:linear-gradient(#fff 0 0) center/2px 100% no-repeat;
  display:grid;
}
.factory-3:before,
.factory-3:after{
  content:"";
  grid-area:1/1;
  background: radial-gradient(circle closest-side, var(--c,#fff) 92%,#0000 ) 0 0/calc(100%/4) 100%;
  clip-path:inset(0 50% 0 0);
  animation:f3 1s infinite linear;
}
.factory-3:after{
  --c:red; 
  clip-path:inset(0 0 0 50%);
}
@keyframes f3 {
    100% {background-position: calc(100%/3) 0}
}

.factory-4 {
  width:90px;
  height:14px;
  box-shadow:0 3px 0 #fff;
  display:grid;
}
.factory-4:before,
.factory-4:after{
  content:"";
  grid-area:1/1;
  background: radial-gradient(circle closest-side, var(--c,red) 92%,#0000 ) 0 0/calc(100%/4) 100%;
  animation:f4 1s infinite linear;
}
.factory-4:after{
  --c:#000; 
  background-color:#fff;
  box-shadow:0 -2px 0 0 #fff;
  clip-path:inset(-2px calc(50% - 10px));
}
@keyframes f4 {
    100% {background-position: calc(100%/3) 0}
}

.factory-5 {
  width:80px;
  height:16px;
  box-shadow:0 15px 0 #fff;
  position:relative;
  clip-path:polygon(0 -10px,100% -10px,100% 100%,50% calc(100% + 15px),0 100%);
}
.factory-5:before,
.factory-5:after {
  content:"";
  position:absolute;
  inset:auto 0 0;
  aspect-ratio:1;
  background:
    radial-gradient(farthest-side,lightblue 98%,#0000) bottom/14px 14px,
    radial-gradient(farthest-side,red       98%,#0000) top   /14px 14px,
    linear-gradient(#fff 0 0) center/4px 95%;
  background-repeat:no-repeat;
  animation:f5 1.5s infinite linear;   
  mix-blend-mode: lighten;
}
.factory-5:after {
  --d:-90deg;
}
@keyframes f5{
  0%  {transform:translateY(14px) rotate(calc(  0deg + var(--d,0deg)))}
  100%{transform:translateY(14px) rotate(calc(-90deg + var(--d,0deg)))}
}

.factory-6 {
  width:90px;
  height:14px;
  box-shadow:0 3px 0 #fff;
  position:relative;
  display:grid;
  clip-path:inset(-60px 0 -5px)
}
.factory-6:after {
  content:"";
  position:relative;
  background:repeating-linear-gradient(90deg,#0000 0 calc(50% - 8px), #ccc 0 calc(50% + 8px), #0000 0 100%) 0 0/calc(100%/3) 100%;
  animation:f6-1 1s infinite;
} 
.factory-6:before {
  content:"";
  position:absolute;
  width:14px;
  aspect-ratio:1;
  left:calc(50% - 7px);
  bottom:0;
  border-radius:50%;
  background:lightblue;
  animation:f6-2 1s infinite;
}
@keyframes f6-1 {
  50%,100% {background-position: calc(100%/2) 0}
}
@keyframes f6-2 {
  0%,50% {transform:translateY(-80px)}
}

.factory-7 {
  width:90px;
  height:14px;
  box-shadow:0 3px 0 #fff;
  position:relative;
  clip-path:inset(-40px 0 -5px)
}
.factory-7:before {
  content:"";
  position:absolute;
  inset:auto calc(50% - 17px) 0;
  height:50px;
  --g:linear-gradient(#ccc 0 0);
  background:var(--g),var(--g),var(--g),var(--g);
  background-size:16px 14px;
  background-repeat:no-repeat;
  animation:
    f7-1 2s infinite linear,
    f7-2 2s infinite linear;
}
@keyframes f7-1 {
  0%,
  100%  {background-position: 0 -50px,100% -50px}
  17.5% {background-position: 0 100%,100% -50px,0 -50px,100% -50px}
  35%   {background-position: 0 100%,100% 100% ,0 -50px,100% -50px}
  52.5% {background-position: 0 100%,100% 100% ,0 calc(100% - 16px),100% -50px}
  70%,
  98%  {background-position: 0 100%,100% 100% ,0 calc(100% - 16px),100% calc(100% - 16px)}
}
@keyframes f7-2 {
  0%,70% {transform:translate(0)}
  100%  {transform:translate(200%)}
}

.factory-8 {
  width:90px;
  height:30px;
  box-shadow:0 3px 0 #fff;
  --g:repeating-linear-gradient(90deg,#ccc 0 16px,#0000 0 18px,#ccc 0 34px,#0000 0 100%);
  background:var(--g),var(--g);
  background-size:60px 14px,60px 14px;
  background-repeat:repeat-x;
  animation:f8 1s infinite linear;
}
@keyframes f8 {
  0%   {background-position:0    0,0    100%}
  100% {background-position:60px 0,60px 100%}
}

/**/
body {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  grid-auto-rows: 130px;
  place-items:center;
  background:#000;
}

* {
  box-sizing: border-box;
}
!

JS
!
999px

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