.animated-1{
    animation: nudge 5s linear infinite alternate;;
}

.animated-2{
    animation: nudge 4s linear infinite alternate;
}

.animated-3{
    animation: nudge-reversal 4.5s linear infinite alternate;
}

.animated-4 {
    animation: nudge-reversal 5.5s linear infinite alternate;
}

@keyframes nudge {
    0% {
      transform: translate(0, 0);
    }
  
    100% {
      transform: translate(0, 100px);
    }

}

@keyframes nudge-reversal {
    0% {
      transform: translate(0, 0);
    }
  
    100% {
      transform: translate(0, -100px);
    }

}

.play-btn {
    width: 94px;
    height: 94px;
    background: radial-gradient(#CF5C36 50%, #cf5c36b7 52%);
    border-radius: 50%;
    display: block;
    position: absolute;
    left: calc(50% - 47px);
    top: calc(50% - 47px);
    overflow: hidden;
}
.play-btn:before {
    content: "";
    position: absolute;
    width: 120px;
    height: 120px;
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
    -webkit-animation: pulsate-btn 2s;
    animation: pulsate-btn 2s;
    -webkit-animation-direction: forwards;
    animation-direction: forwards;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    -webkit-animation-timing-function: steps;
    animation-timing-function: steps;
    opacity: 1;
    border-radius: 50%;
    border: 5px solid rgba(200, 0, 0, 0.544);
    top: -15%;
    left: -15%;
    background: rgba(198, 16, 0, 0);
}
  
.play-btn:after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-40%) translateY(-50%);
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 15px solid #fff;
    z-index: 100;
    transition: all 400ms cubic-bezier(0.55, 0.055, 0.675, 0.19);
}
  
.play-btn:hover:before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-40%) translateY(-50%);
    width: 0;
    height: 0;
    border: none;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 15px solid #fff;
    z-index: 200;
    -webkit-animation: none;
    animation: none;
    border-radius: 0;
}
  
.play-btn:hover:after {
    border-left: 15px solid #CF5C36;
    transform: scale(20);
}
  
  @-webkit-keyframes pulsate-btn {
    0% {
      transform: scale(0.6, 0.6);
      opacity: 1;
    }
  
    100% {
      transform: scale(1, 1);
      opacity: 0;
    }
  }
  
  @keyframes pulsate-btn {
    0% {
      transform: scale(0.6, 0.6);
      opacity: 1;
    }
  
    100% {
      transform: scale(1, 1);
      opacity: 0;
    }
  }