.breathing-effect {
    animation: breathing 1s ease-out infinite normal;
    -webkit-font-smoothing: antialiased; 
    }

    @-webkit-keyframes breathing {
      0% {
        box-shadow: 0px 1px -1px greenyellow;
      }
    
      50% {
        box-shadow: 0px 0px 5px 5px greenyellow;
      }   
    }
    
    @keyframes breathing {
      0% {
        box-shadow: 0px 1px -1px greenyellow;
      }
    
      50% {
        box-shadow: 0px 0px 5px 5px greenyellow;
      }   
    }