body { font-family: sans-serif; text-align: center; }
#game-area {
    width: 200px;
    height: 300px;
    border: 2px solid black;
    margin: 20px auto;
    position: relative;
    overflow: hidden;
}
.note {
    position: absolute;
    width: 100%;
    height: 20px;
    background-color: blue;
    bottom: 300px; /* Start above the visible area */
    transition: bottom linear; /* Smooth movement */
}
#start-button { padding: 10px 20px; }