<div class="slider1">
  <ul>
      <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_2d73d9b5-91fa-4298-a1e3-0545301a7455.png"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-630x60_v-fs_webp_381d9ac6-5edc-4541-8913-1c9539c07950.jpg"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-231x60_webp_06f5ffba-6d42-4312-b016-dea6c0607105.png"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-420x60_webp_63232517-010e-4677-a295-911db7a31737.png"></li>
   <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-280x60_webp_fd8d0ab0-c8b4-455d-a19c-c7fce8e53e8a.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-220x60_webp_6d7609d8-0c5f-4e49-b427-0eba421ef04b.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-360x60_webp_2e50e8af-06c3-48f8-a9d1-4e7d5c694233.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_a3e15470-e489-45f5-bd59-5100c6a17ee8.jpg"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_aee57f49-ae74-4120-894d-99662afaa4a5.png"></li>
      <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_c6f6b65f-2b64-4628-b999-3372bbee316c.png"></li>
          <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_2d73d9b5-91fa-4298-a1e3-0545301a7455.png"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-630x60_v-fs_webp_381d9ac6-5edc-4541-8913-1c9539c07950.jpg"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-231x60_webp_06f5ffba-6d42-4312-b016-dea6c0607105.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-420x60_webp_63232517-010e-4677-a295-911db7a31737.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-280x60_webp_fd8d0ab0-c8b4-455d-a19c-c7fce8e53e8a.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-220x60_webp_6d7609d8-0c5f-4e49-b427-0eba421ef04b.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-360x60_webp_2e50e8af-06c3-48f8-a9d1-4e7d5c694233.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_a3e15470-e489-45f5-bd59-5100c6a17ee8.jpg"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_aee57f49-ae74-4120-894d-99662afaa4a5.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_c6f6b65f-2b64-4628-b999-3372bbee316c.png"></li>
  </ul>
  
  <ul>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_2d73d9b5-91fa-4298-a1e3-0545301a7455.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_2d73d9b5-91fa-4298-a1e3-0545301a7455.png"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-630x60_v-fs_webp_381d9ac6-5edc-4541-8913-1c9539c07950.jpg"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-231x60_webp_06f5ffba-6d42-4312-b016-dea6c0607105.png"></li>
   <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-420x60_webp_63232517-010e-4677-a295-911db7a31737.png"></li>
   <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-280x60_webp_fd8d0ab0-c8b4-455d-a19c-c7fce8e53e8a.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-220x60_webp_6d7609d8-0c5f-4e49-b427-0eba421ef04b.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_aee57f49-ae74-4120-894d-99662afaa4a5.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_a3e15470-e489-45f5-bd59-5100c6a17ee8.jpg"></li>
      <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_c6f6b65f-2b64-4628-b999-3372bbee316c.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-360x60_webp_2e50e8af-06c3-48f8-a9d1-4e7d5c694233.png"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-630x60_v-fs_webp_381d9ac6-5edc-4541-8913-1c9539c07950.jpg"></li>
    <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-231x60_webp_06f5ffba-6d42-4312-b016-dea6c0607105.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-420x60_webp_63232517-010e-4677-a295-911db7a31737.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-280x60_webp_fd8d0ab0-c8b4-455d-a19c-c7fce8e53e8a.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-220x60_webp_6d7609d8-0c5f-4e49-b427-0eba421ef04b.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_aee57f49-ae74-4120-894d-99662afaa4a5.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-250x60_webp_a3e15470-e489-45f5-bd59-5100c6a17ee8.jpg"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-320x60_webp_c6f6b65f-2b64-4628-b999-3372bbee316c.png"></li>
     <li><img src="https://storage.googleapis.com/studio-design-asset-files/projects/7kadEob1W3/s-360x60_webp_2e50e8af-06c3-48f8-a9d1-4e7d5c694233.png"></li>
  </ul>
</div>

.slider1 {
  display: flex;
  margin: 0 calc(50% - 50vw);
  width: 100vw;
  height:100px;
  overflow: visible;
}
.slider1 ul{
  display:flex;
  padding: 0;
  margin:0;
  list-style: none;
}
.slider1 li{
  float:left;
  
}
.slider1 ul:first-child {
  animation: slide1 80s -40s linear infinite;
}

.slider1 ul:last-child {
  animation: slide2 80s linear infinite;
}
@keyframes slide1 {
  0% {
    transform: translateX(100%);
  }
  to {
    transform: translateX(-100%);
  }
}

@keyframes slide2 {
  0% {
    transform: translateX(0);
  }
  to {
    transform: translateX(-200%);
  }
}