JSFiddle - React, Tailwind, and code Playground

HTML

<div class="spinner">
      <div class="double-bounce1"></div>
      <div class="double-bounce2"></div>
    </div>

CSS

.spinner {
      width: 60px;
      height: 60px;
     
      position: relative;
      margin: 100px auto;
    }
     
    .double-bounce1, .double-bounce2 {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #67CF22;
      opacity: 0.6;
      position: absolute;
      top: 0;
      left: 0;
       
      -webkit-animation: bounce 2.0s infinite ease-in-out;
      animation: bounce 2.0s infinite ease-in-out;
    }
     
    .double-bounce2 {
      -webkit-animation-delay: -1.0s;
      animation-delay: -1.0s;
    }
     
    @-webkit-keyframes bounce {
      0%, 100% { -webkit-transform: scale(0.0) }
      50% { -webkit-transform: scale(1.0) }
    }
     
    @keyframes bounce {
      0%, 100% {
        transform: scale(0.0);
        -webkit-transform: scale(0.0);
      } 50% {
        transform: scale(1.0);
        -webkit-transform: scale(1.0);
      }
    }