/*  Sets styles for body          */
/*  content container             */
/* -----------------------------  */

.o_body {
    position: relative;
    margin-left: 300px;
    width: 70%;
    margin-right: 10%; 
}

@media only screen and (max-width: 1200px) {
    .o_body {
        position: relative;
        margin-left: 0;
        margin-right: 0; 
        width: 100%;
    }
}

@media only screen and (min-width: 1800px) {
    .o_body {
        position: relative;
        margin-left: 450px;
        margin-right: 0;
        width: 55%;
    }
}