.add_button {
    background-color: @colorMain;
    color:#FFF;
    &:hover, &:focus {
        background-color: darken(@colorMain, 10%);
        color: #FFF;
    }
}
.add_button.remove_button {
    color: #3171c9;
    background-color: transparent;
    &:hover, &:focus {
        background-color: transparent;
        color: #3171c9;
    }
}