.maincon-2{
    display: flex;
    align-items: center;
}
.maincon-2 img{
    width: 600px;
    margin: auto;
}
.maincon-2{
    margin-top: 100px;
}
.screens{
    display: flex;
    align-items: center;
    margin-top: 100px;
}
.pcscreen{
    margin: auto;
}
.telscreen{
    width: 200px;
    margin: auto;
    margin-left: -400px;
    z-index: 9;

}

@media only screen and (max-width: 700px) {
    .screens{
        flex-direction: column;
    }
    .pcscreen{
        width: 100%;
    
    }
    .telscreen{
        width: 50%;
        margin: 0;
        margin-top: 20px;
    }
    .maincon-2{
        flex-direction: column-reverse;
    }
    .maincon-2 .col-6{
        width: 100%;
    }
    .maincon-2 img{
        width: 100%;
    }
}