.ball-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.jar {
    width: 300px;
    height: 300px;
    position: relative;
    background-color: #fff;
    border-left: 5px solid #00008b;
    border-right: 5px solid #00008b;
    border-bottom: 5px solid #00008b;
    border-radius: 0 0 50px 50px; /* Rounded bottom corners */
    overflow: hidden;
    margin-bottom: 20px;
  }

button {
    padding: 10px 20px;
    margin: 5px;
    font-size: 16px;
    cursor: pointer;
    background-color: #00008b;
    color: white;
    border: none;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}