@media only screen and (max-width: 991px) {
    #history-slide
    {
        margin-top: 25px;
        /*height: 40% !important;*/
    }
    #history-slide .history-container
    {
        padding-left: 0 !important;
    }
    #history-slide .card-header .history-image
    {
        height: 350px !important;
    }
}
@media only screen and (max-width: 768px) {

    #history-slide .card-header .history-image
    {
        height: 300px !important;
    }

    #object-security,#personal-security,#electron-security,#advice-security,#building-security
    {
        padding: 10px 0 10px 0 !important;
    }

}@media only screen and (max-width: 500px) {

    #history-slide .card-header .history-image
    {
        height: 250px !important;
    }
}

/*}*/
/*@media only screen and (max-width: 600px) {*/
/*    header  .navbar-brand*/
/*    {*/
/*        width: 60% !important;*/
/*    }*/
/*}*/