@keyframes pulsate {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

body {
    background-color: #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    color: #fff;
}

.playButton {
    position: absolute;
    top: 50%;
    left: 32.7%;
    width: 73px;
    height: 122px;
    background-color: #000;
    color: #0f0;
    border: none;
    font-size: 50px;
    cursor: pointer;
}

.stopButton {
    position: absolute;
    top: 50%;
    left: 59.1%;
    width: 74px;
    height: 122px;
    background-color: #000;
    color: #fff;
    border: none;
    font-size: 50px;
    cursor: pointer;
}