.btn-todos-departamentos {
    position: relative;
    background-color: #590D7D;
    border-radius: 0px !important;
    color: #FFF;
}

.btn-todos-departamentos:hover {
    background-color: #590D7D;
    color: #FFF !important;
}

.menu-todos-departamentos {
    /* display: none; */
    position: absolute;
    width: 100%;
    max-height: 0px;
    overflow: hidden;
    z-index: 100; 
    top: 100%; 
    left: 0;
    transition: max-height 0.4s;
    background: linear-gradient(to left, #590D7D 50%, #7511A5 50%);
    box-shadow: 0 .5rem 1rem rgba(0,0,0,.15)!important;
}

.menu-todos-departamentos.ativo {
    /* display: block !important; */
    /* max-height: 100%; */
    max-height: 500px;
}

.backdrop-menu-todos-departamentos {
    position: absolute;
    z-index: 4;
    inset: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}