button {
position: fixed;
  bottom: 10%;
  right: 50%;
  cursor: pointer;
  background-color: red;
  border: 2px solid yellow;
  color: white;
  padding: 30px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  border-radius: 50%;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
  shadow-offset-x: 2px;
  shadow-offset-y: 2px;
  shadow-blur: 5px;
  
  transition: box - shadow 0.3s ease;
    }
 
    button:hover {
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.6);
    }

.controls {
  padding: 24px;
}

.modal-container {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 300;
  width: 60%;
  height: 60vh;
  overflow: hidden;
  background: transparent;
  opacity: 0;
  visibility: hidden;
}

.modal-dialog {
  width: 70vmin;
  height: 70vmin;
  position: relative;
  
}

.modal-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.modal-polygon {
  fill: orange;
}

.modal-content {
  position: relative;
  top: 0;
  left: 0;
  padding: 24px;
  visibility: hidden;
  opacity: 0;
  color: rgba(255, 255, 255, 0.0);
}