.themebutton {
    height: 40px; 
    width: 40px; 
    border-color: #000000; 
    border-radius: 0; 
    margin: 5px !important; 
    padding-top: 10px; 
    padding-left: 10px;
}

.themebtndark {
    background-color: #364151;
}

.themebtnlight {
    background-color: #FFFFFF;
}