JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">

  <div class="street">

    <div class="block"></div>
    <div class="block"></div>
    <div class="block"></div>
    <div class="block"></div>
    <div class="block"></div>
    <div class="block"></div>
    <div class="block"></div>

  </div>
  
</div

CSS

@keyframes moving {

        from {
            transform: translateX( 0 ) translateZ( 0 );
        }

        to {
            transform: translateX( -15% ) translateZ( 0 );
        }    
        
}
            
.container {
  width: 600px;
  height: 100px;
  background: #333;
}
.street {
  position: relative;
  height: 6px;
  width: 120%;
  top: 48px;
  will-change: transform;
  animation: moving 1.5s linear infinite;
}

.block {
    display: block;
    float: left;
    position: relative;
    z-index: 2;
    background: #fff;
    width: 7%;
    height: 100%;
    margin: 0 4%;
}
.block:first-child {
  margin-left: 0;
}
.block:last-child {
  margin-right: 0;
}