@media only screen and (max-width: 1100px) {
    /* slide 1*/
    #logo-slide1 {
        display: none;
    }
    #htitle-slide1 {
        margin-top: 75px;
        line-height: 28px;
    }
    #description-slide1 {
        display: none;
    }
    /* slide 2*/
    #logo-slide2 {
        display: none;
    }
    #description-slide2 {
        display: none;
    }
    #link-slide2 {
        display: none;
    }
    #title-slide2 {
        color: white;
    }
    #htitle-slide2 {
        margin-top: 100px;
    }
    /* slide 3 */
    #logo-slide3 {
        display: none;
    }
    #htitle-slide3 {
        margin-top: 100px;
    }
    #description-slide3 {
        display: none;
    }
    #link-slide3 {
        display: none;
    }
    #main-slide {
        margin-top: 41px;
    }
    #menu.navbar-default {
        background-color: black;
        /*opacity: 0.95;*/
    }
    .about-text1 {
        padding-left: 20px;
        padding-right: 20px;
    }
}