#row1 {
    display: flex;
    justify-content: space-evenly;
}

.led_off {
    width: 20vw;
    padding-top: 3vh;
    padding-bottom: 3vh;
    margin: auto;
    text-align: center;
    background-color: teal;
}

.led_on {
    width: 20vw;
    padding-top: 3vh;
    padding-bottom: 3vh;
    margin: auto;
    text-align: center;
    background-color: greenyellow;
}
