@media screen and (min-width: 786px) and (max-width: 1023px){
    .container{
        width:100%;
        padding-right:15px;
        padding-left:15px;
        margin-right:auto;
        margin-left:auto
    }
    @media (min-width:576px){
        .container{
            max-width:540px
        }
    }
    @media (min-width:768px){
        .container{
            max-width:720px
        }
        .navbar-nav {
            display: -webkit-box;
            display: -ms-flexbox;
            display: flex;
            -webkit-box-orient: vertical;
            -webkit-box-direction: normal;
            -ms-flex-direction: column;
            flex-direction: column;
            padding-left: 0;
            margin-bottom: 0;
            list-style: none
        }

        .navbar-nav .nav-link {
            padding-right: 0;
            padding-left: 0
        }

        .navbar-nav .dropdown-menu {
            position: static;
            float: none
        }

        .navbar-text {
            display: inline-block;
            padding-top: .5rem;
            padding-bottom: .5rem
        }

        .navbar-collapse {
            -ms-flex-preferred-size: 100%;
            flex-basis: 100%;
            -webkit-box-flex: 1;
            -ms-flex-positive: 1;
            flex-grow: 1;
            -webkit-box-align: center;
            -ms-flex-align: center;
            align-items: center
        }

        .navbar-toggler {
            padding: .25rem .75rem;
            font-size: 1.25rem;
            line-height: 1;
            background-color: transparent;
            border: 1px solid transparent;
            border-radius: .25rem
        }

        .navbar-toggler:focus, .navbar-toggler:hover {
            text-decoration: none
        }

        .navbar-toggler:not(:disabled):not(.disabled) {
            cursor: pointer
        }

        .navbar-toggler-icon {
            display: inline-block;
            width: 1.5em;
            height: 1.5em;
            vertical-align: middle;
            content: "";
            background: no-repeat center center;
            background-size: 100% 100%
        }

        .heading{
            margin-top: -100px;
        }
    }
    @media (min-width:992px){
        .container{
            max-width:960px
        }
    }
    @media (min-width:1200px){
        .container{
            max-width:1140px
        }
    }
}

@media (max-width: 575.98px) {
    .navbar-expand-sm > .container, .navbar-expand-sm > .container-fluid {
        padding-right: 0;
        padding-left: 0
    }
}
@media (min-width: 576px) {
    .navbar-expand-sm {
        -webkit-box-orient: horizontal;
        -webkit-box-direction: normal;
        -ms-flex-flow: row nowrap;
        flex-flow: row nowrap;
        -webkit-box-pack: start;
        -ms-flex-pack: start;
        justify-content: flex-start
    }

    .navbar-expand-sm .navbar-nav {
        -webkit-box-orient: horizontal;
        -webkit-box-direction: normal;
        -ms-flex-direction: row;
        flex-direction: row
    }

    .navbar-expand-sm .navbar-nav .dropdown-menu {
        position: absolute
    }

    .navbar-expand-sm .navbar-nav .dropdown-menu-right {
        right: 0;
        left: auto
    }

    .navbar-expand-sm .navbar-nav .nav-link {
        padding-right: .5rem;
        padding-left: .5rem
    }

    .navbar-expand-sm > .container, .navbar-expand-sm > .container-fluid {
        -ms-flex-wrap: nowrap;
        flex-wrap: nowrap
    }

    .navbar-expand-sm .navbar-collapse {
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        -ms-flex-preferred-size: auto;
        flex-basis: auto
    }

    .navbar-expand-sm .navbar-toggler {
        display: none
    }

    .navbar-expand-sm .dropup .dropdown-menu {
        top: auto;
        bottom: 100%
    }
}