@media only screen and ( min-width: 980px ) /* MASAÜSTÜ */
{
    .galeri {
        width: 30%;
        margin-right: 2%;
        float: left;
        text-align: center;
        line-height: 270px;
        height: 270px;
        border: 1px solid #d8d8d8;
        background-color: #ffffff;
        overflow: hidden;
        margin-bottom: 2%;
    }

        .galeri img {
            max-width: 100%;
            max-height: 270px;
            float: left;
        }

    .belge_slide_div {
        width: 100%;
        float: left;
        height: auto;
    }
}

@media only screen and ( max-width: 979px ) /*  MOBİL*/
{
    .galeri {
        width: 46%;
        margin-right: 2%;
        float: left;
        text-align: center;
        line-height: 270px;
        height: 270px;
        border: 1px solid #d8d8d8;
        background-color: #ffffff;
        overflow: hidden;
        margin-bottom: 2%;
    }

        .galeri img {
            max-width: 100%;
            max-height: 270px;
            float: left;
        }

    .belge_slide_div {
        width: 90%;
        margin-left:5%;
        float: left;
        height: auto;
    }
}