.explosion {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
  }
  .explosion div {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: crimson;
    border-radius: 500px;
    animation-fill-mode: forwards;
    transform-origin: left center;
    animation-duration: .5s;
  }
  .explosion div:nth-child(1) {
    animation-name: explode1;
    transform: rotate(0) translate(0,0);
  }
  .explosion div:nth-child(2) {
    animation-name: explode2;
    transform: rotate(45deg) translate(0,0);
  }
  .explosion div:nth-child(3) {
    animation-name: explode3;
    transform: rotate(90deg) translate(0,0);
  }
  .explosion div:nth-child(4) {
    animation-name: explode4;
    transform: rotate(135deg) translate(0,0);
  }
  .explosion div:nth-child(5) {
    animation-name: explode5;
    transform: rotate(180deg) translate(0,0);
  }
  .explosion div:nth-child(6) {
    animation-name: explode6;
    transform: rotate(225deg) translate(0,0);
  }
  .explosion div:nth-child(7) {
    animation-name: explode7;
    transform: rotate(270deg) translate(0,0);
  }
  .explosion div:nth-child(8) {
    animation-name: explode8;
    transform: rotate(315deg) translate(0,0);
  }
  @keyframes explode1 {
    0% {
      width: 100%;
      transform: rotate(0) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(0) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(0) translate(300%,0);
    }
  }
  @keyframes explode2 {
    0% {
      width: 100%;
      transform: rotate(45deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(45deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(45deg) translate(300%,0);
    }
  }
  @keyframes explode3 {
    0% {
      width: 100%;
      transform: rotate(90deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(90deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(90deg) translate(300%,0);
    }
  }
  @keyframes explode4 {
    0% {
      width: 100%;
      transform: rotate(135deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(135deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(135deg) translate(300%,0);
    }
  }
  @keyframes explode5 {
    0% {
      width: 100%;
      transform: rotate(180deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(180deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(180deg) translate(300%,0);
    }
  }
  @keyframes explode6 {
    0% {
      width: 100%;
      transform: rotate(225deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(225deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(225deg) translate(300%,0);
    }
  }
  @keyframes explode7 {
    0% {
      width: 100%;
      transform: rotate(270deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(270deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(270deg) translate(300%,0);
    }
  }
  @keyframes explode8 {
    0% {
      width: 100%;
      transform: rotate(315deg) translate(0,0);
    }
    50% {
      width: 400%;
      transform: rotate(315deg) translate(0,0);
    }
    100% {
      width: 100%;
      transform: rotate(315deg) translate(300%,0);
    }
  }