#about_us_main_photo{
    height: 90vh;
    width: 100%;
    background-image: url(../images/cartridges.jpg);
    background-size: cover;
    background-position: top;
    background-position-y: -80px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#about_us_main_photo_header{
    font-size: 8vmin;
    margin: 0;
    padding: 0;
    font-family: "Tektur", sans-serif;
    font-weight: 700;
    color: #bcaf10;
    letter-spacing: 10px;
    text-transform: uppercase;
}

#about_us_description{
    width: 100%;
    height: fit-content;
    padding-top: 70px;
    padding-bottom: 70px;
    background-color: #161616;
    display: flex;
    justify-content: center;
    align-items: center;
}

#about_us_description p{
    color: #bb8645;
    font-size: 17px;
    font-family: "Roboto", sans-serif;
    text-align: center;
    font-weight: 600;
    padding: 0;
    margin: 0;
    width: 67%;
}

#about_us_slogan_part{
    width: 100%;
    height: 60vh;
    background-color: #1f2913;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#about_us_slogan_part div{
    width: 60%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#about_us_slogan_part div p{
    width: 100%;
    font-weight: 700;
    padding: 0;
    margin: 0;
    color: #bcaf10;
    font-size: 8vmin;
    font-family: "Tektur", sans-serif;
}

#about_us_slogan_part div p:first-child{
    text-align: start;
}

#about_us_slogan_part div p:last-child{
    text-align: end;
}

#about_us_est{
    width: 100%;
    height: 60vh;
    background-color: #161616;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#about_us_est p{
    font-weight: 700;
    padding: 0;
    margin: 0;
    color: #bcaf10;
    font-size: 8vmin;
    font-family: "Tektur", sans-serif;
    text-align: center;
}

#about_us_certificates{
    height: fit-content; 
    padding-bottom: 70px; 
    background-color: #161616; 
    display: flex; 
    justify-content: center;
}

#about_us_certificates .row{
    display: flex; 
    justify-content: center; 
    width: 95%;
}

#about_us_certificates .row .col-lg-3{
    height: 300px; 
    width: 200px;
    margin-right: 10px;
}

#about_us_certificates img{
    pointer-events: none;
}

@media only screen and (max-width: 884px){
    #about_us_certificates .row .col-lg-3:last-child{
        margin-top: 10px;
    }
}

@media only screen and (max-width: 884px){
    #about_us_certificates .row .col-lg-3:last-child, #about_us_certificates .row .col-lg-3:nth-child(3){
        margin-top: 10px;
    }
}


@media only screen and (max-width: 576px){
    #about_us_description{
        height: fit-content;
        padding: 30px 0 30px 0;
    }

    #about_us_description p{
        width: 100%;
        padding: 0 15px 0 15px;
    }

    #about_us_slogan_part{
        height: 40vh;
    }

    #about_us_slogan_part div{
        width: 100%;
        padding: 0 20px 0 20px;
    }

    #about_us_est{
        height: 40vh;
    }

    #about_us_certificates .col-lg-3:not(#about_us_certificates .col-lg-3:first-child){
        margin-left: 0 !important;
        margin-top: 15px;
    }

    #headers-background, #header-1, #header-2{
        display: none !important;
    }
}

@media only screen and (max-width: 1071px){
    #about_us_slogan_part div p, #about_us_est p{
        font-size: 6vmin;
    }

    #about_us_main_photo{
        background-position-y: 0;
        background-image: linear-gradient( rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.65) ), url(../images/cartridges.jpg);
    }
}