@media only screen and (min-width: 1001px) {
    .banner-one
{
    display: flex;
    justify-content: space-between;
    width:100%;
    max-width:1200px;
    margin-left:auto;
    margin-right:auto;
    margin-top:50px;
}

    .container-600-box 
    {
        display:block;
        width:32%;
        max-width:390px;
    }
  
}


.container-boc-image
{
    display:block;
    width:100%;
}


@media only screen and (max-width: 1000px) {
    .banner-one
    {
        display:flex;
        flex-direction: column;
        justify-content: space-between;
        width:90%;
        margin-left:auto;
        margin-right:auto;
        
    }
    .container-600-box 
    {
        margin-top:50px;
        width:90%;
          margin-left:auto;
          margin-right:auto;
        max-width:500px;
    }
  
}