/*[data-toggle="collapse"] .fa:before {  
  content: "\f139";
}

[data-toggle="collapse"].collapsed .fa:before {
  content: "\f13a";
}*/

/* Rules for sizing the icon. */
.material-icons.md-18 {
    font-size: 18px;
}

.material-icons.md-24 {
    font-size: 24px;
}

.material-icons.md-36 {
    font-size: 36px;
}

.material-icons.md-48 {
    font-size: 48px;
}

/* Rules for using icons as black on a light background. */
.material-icons.md-dark {
    color: rgba(0, 0, 0, 0.54);
}

    .material-icons.md-dark.md-inactive {
        color: rgba(0, 0, 0, 0.26);
    }

/* Rules for using icons as white on a dark background. */
.material-icons.md-light {
    color: rgba(255, 255, 255, 1);
}

    .material-icons.md-light.md-inactive {
        color: rgba(255, 255, 255, 0.3);
    }



/*.toggle-me {
    background: red;
}

.toggle-me--blue {
    background: blue;
}*/

/* add this class to hide icon */
/*.mdc-icon-button.hidden {
    display: none;
}*/