@media (max-width: 577px){

    nav.navbar.navbar-expand-lg.navbar-light.position-absolute.w-100{
        position: static!important
    }
    .main_slider .h-100.d-flex.align-items-center.justify-content-center{
        align-items: flex-start !important
    }
    .main_slider.position-relative{
        height: 640px;
    }
    .main_slider .inside_slide{
        top: 30px
    }
    .main_slider h2.font-weight-bold.main_color{
        border-bottom: 0px !important
    }
    .my_down{
        bottom: 30px !important
    }
    .main_slider p.text-white.h5.my_light.pt-4{
        font-size: 15px;
    }
    img.img-fluid.position-absolute{
        max-width: 85%
    }
    .main_about .inside_about{
        top: 50px
    }
    p.text-white.h5{
        font-size: 15px !important
    }
    .main_history .inside_history{
        top: 50px
    }
    .profile form.w-75{
        width: 100% !important
    }
    .profile .d-flex.align-items-start.foren{
        display: block !important;
        width: 100% !important
    }
    .profile div#v-pills-tabContent{
        width: 100% !important
    }
    .online ul#pills-tab{
        display: block !important
    }
    .online li.nav-item{
        width: 100% !important
    }

}