#mute-button {
    position: absolute;
    bottom: 0px;
    right: 0px;
    background-color: transparent;
    border: none;
    color: white;
}

#mute-button-icon {
    font-size: 36px;
}

.z-index-0 {
    z-index: 0;
}

.z-index-1 {
    z-index: 1;
}

.relative {
    position: relative;
}