@media screen and (max-width: 768px) {
    .logo {
        width: 47%;
    }
    .navbar-dark .navbar-nav .nav-link{
        text-align:right;
    }
    .banner {
        /*margin-top: 3.5rem;*/
    }
    .main-heading h4{
        margin-top:10px;
    }
    .contact-block .col-md-6{
        padding:0;
    }
    .navbar-brand {
        width: 70% !important;
    }
    .banner-text{
        font-size:25px;
    }
    .ad-block .col-md-4 {
        margin-right: 0;
        margin-left: 0;
    }
    .ad-block .col-sm-6 {
        width: 45% !important;
        flex: 0 0 45%;
        max-width: 45%;
        margin-left: 6px !important;
        margin-right: 6px !important;
        margin-bottom: 1rem;
    }

    .ad-block .card-body {
        padding: 0.75rem;
    }

    .brand-img {
        flex: 0 0 16.666667%;
        max-width: 16.666667%;
    }

    .logo-text {
        flex: 0 0 83.333333%;
        max-width: 83.333333%;
    }

    .card-text:last-child {
        margin-bottom: 0;
        font-size: 13px;
    }
}
@media screen and (min-width:768px){
    .nav-item{
        width:140px;
    }
    .ad-block .col-md-12.text-left {
        max-width: 78.333333%;
        font-weight:600;
    }
}