translate image to infinity 3 on screen and 8 total

i want transform this static image
IMG

into this site for see what i mean scroll down the page. The code that i did it is this, the objective is do 8 image total but only 3 on screen that go on to infinity. Javascript is not implemented, i should like know also the copyright if is a problem and what i can do to do same think without risk the copyright

    .content {
     display: flex;
     justify-content: space-around;
     align-items: center;
     padding: 20px;
     width: 100%;
      }
    .content__row {
     display: flex;
     width: 100%;
     margin: 5px 0;
     }
    .content__img {
     display: flex;
     width: 80%;
     height: 90%;
     padding: 0%;
     }
     .content__a {
      text-decoration: none;
      align-items: center;
     }
     .content__p {
      align-items: center;
      text-align: center; 
      width: 80%;
      font-size: 35px;
      font-weight: 900;
      font-family: 'Ubuntu', sans-serif;
      color: rgb(39, 39, 255);
      } 
        <div class="content">
      <div class="content__row">
        <a class="content__a" href="#">
          <img class="content__img" src="https://via.placeholder.com/300x600" alt="">
          <p class="content__p">COMPILARE
            <br>
            <span class="content__span">730?</span>
          </p>
        </a>
        <a class="content__a" href="#">
          <img class="content__img" src="https://via.placeholder.com/300x600" alt="">
          <p class="content__p">CALCOLARE
            <br>
            <span class="content__span">L'ISEE?</span>
          </p>
        </a>
        <a class="content__a" href="#">
          <img class="content__img" src="https://via.placeholder.com/300x600" alt="">
          <p class="content__p">CALCOLARE
            <br>
            <span class="content__span">L'ISEE?</span>
          </p>
        </a>
      </div>
    </div>