.zoom-image{
    margin: 20px auto;
    text-align: center;
}
.glass {
    width: 200px;
    height: 200px;
    right: 400px;
    position: absolute;
    border-radius: 50%;
    cursor: crosshair;
    
    /* Multiple box shadows to achieve the glass effect */
    box-shadow:
      0 0 0 7px rgba(255, 255, 255, 0.85),
      0 0 7px 7px rgba(0, 0, 0, 0.25), 
      inset 0 0 40px 2px rgba(0, 0, 0, 0.25);
    
    /* hide the glass by default */
    display: none;
  }