gallery.css

.balloon-select {
    color: #313149;
    padding: 0px;
    display: inline-block;
    margin: 0;
    position: relative;
    z-index: 0;
    width: 150px;
    height: 150px;
    border-radius: 50%;
  }
  
  .balloon-select:before {
    content: '';
    position: absolute;
    z-index: -1;
    inset: 0;
    padding: 20px;
    border-radius: 50%;
    background: radial-gradient(
      circle,
      rgb(109 220 155) 30%,
      rgb(11 185 225) 80%,
      rgba(9, 204, 249, 1) 100%
    );
    -webkit-mask: radial-gradient(#fff 0 0) content-box, radial-gradient(#fff 0 0);
    mask: radial-gradient(#fff 0 0) content-box, radial-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
  }
  
  .balloon-unselect {
    background: radial-gradient(
      circle,
      rgba(109, 220, 155, 0.8) 30%,
      rgba(11, 185, 225, 0.8) 80%,
      rgba(9, 204, 249, 0.8) 100%
    );
    height: auto;
    width: 100;
    height: 100;
    border-radius: 50%;
  }
  
  .balloon:hover {
    animation: bouncing 2s linear 0s infinite;
  }
  
  @keyframes bouncing {
    0% {
      transform: scale(1, 1);
    }
    50% {
      transform: scale(1.3, 1.3);
    }
  
    100% {
      transform: scale(1, 1);
    }
  }
  
  .lines {
    stroke-dasharray: 450;
    stroke-dashoffset: 450;
    animation: draw 2s linear forwards;
  }
  
  @keyframes draw {
    to {
      stroke-dashoffset: 0;
    }
  }