#mute-button {
            width: 45px;
            height: 45px;
            min-width: 35px !important; /* override original css */
            background-color: #23B9EF;
            border: 1px solid black;
            cursor: pointer;
            box-shadow: 0px 1px 2px black;
            z-index: 9999;
            padding: 10px;
            border-radius: 5px;
            font-size: 150%;

            position: fixed;
            top: 50px;
            right: 50px;
        }

        #mute-button:hover {
            background-color: #33C9FF;
        }
        
        #mute-button img {
            width: 100%;
        }