.locked {
    font-size: 18px;
    font-family: 'Microsoft Yahei', serif;      
    background-color: rgb(168, 167, 167);   
    color: white;
}

/* .locked_handle{
    background-image: url("../img/right_arrow.png");  
}   */


.unlocked {
    background-color:rgb(128, 131, 128);
}
/* .unlocked_handle{
    background-image: url("../img/left_arrow.png");   
}   */