@media(max-width:880px) {
    .video_player img {
        position: absolute;
        width: 100%;
    }
}

@media(max-width:500px) {
    li.menu_has_children:after {
        content: "";
    }

    .site-logo,
    .site-title {
        display: block;
        font-size: 36px;
        line-height: 1;
        width: 200px;
    }

    h2 {
        font-size: 16px;
        padding: 0px 0px 20px 0px;
    }

    .effective_presentation,
    .effective_presentation_2,
    .effective_presentation_3,
    .effective_presentation_4 {
        padding: 20px 0px 30px 0px;
    }

    .logo h1,
    .logo b {
        font-size: 42px;
        font-weight: bold;
    }

    .logo h1 {
        color: white;
    }

    .logo h1 b {
        background-color: white;
        color: #033fb7;
        letter-spacing: 9px;
        padding: 0px 46px;
    }

    .citata_block_1 {
        background-image: url(../images/citata_block_1-mob.png);

    }

    .citata_block_2 {
        background-image: url(../images/citata_block_2-mob.png);

    }

    .citata_block_3 {
        background-image: url(../images/citata_block_3-mob.png);

    }

    .citata_block_4 {
        background-image: url(../images/enshteyn-mob.png);

    }

    .text p {
        font-size: 18px;
        font-weight: 100;
    }

    .text p b {
        font-size: 22px;
        font-weight: 500;
    }

    .pad_2 {
        padding: 50px 0px 400px 0px;
    }

    .color_main {
        padding: 400px 0px 50px 0px;
    }

    .color_main p {
        color: white;
    }

    .pad_3 {
        padding: 400px 0px 50px 0px;
    }

    .video_player {
        position: relative;
        display: block;
        width: 100%;
        height: 190px;
    }
}