section{
 max-width: 1000px;
 margin: auto;
}

section h3{
    font-size: 17px;
}

section p{
    font-size: 15px;
    margin-bottom: 10px;
}

section h2{
    margin-bottom: 15px;
}

@media(max-width: 71em){
    section{
        max-width: 740px;
    }    
    section p{
        font-size: 16px;
    }
    section h3{
        font-size: 20px;
    }
    section  h2{
        font-size: 25px;
    }
}

@media(max-width: 49em){
    section{
        max-width: 340px;
    }    
    section p{
        font-size: 13px;
    }
    section h3{
        font-size: 17px;
    }
    section  h2{
        font-size: 20px;
    }
}