#presentation {
    background-image: url("../img/test.jpg");
    background-position: right;
    background-repeat: no-repeat;
    background-size: cover;
    padding: 0;
}

#presentation h1 {
    padding: 0;
    margin: -240px 0 0 20px ;
}

@media only screen and (max-width: 890px)
{
    #presentation h1 {
        padding: 0;
        margin: -280px 0 0 20px ;
        font-size: 350%;
        
    }

}

#presentation p{
    margin: 10px;
    margin-left: 40px;
}


@media only screen and (max-width: 890px)
{
    #presentation p{
        margin: 20px;
        margin-left: 20px;
        font-size: 100%;
    }
}


.textbox img {
	margin-left: auto;
	margin-right: auto;
    display: block;
    max-width: 80%;
}