@media only screen and (max-width: 800px) {
    .justify-content-between {
        display: block;
    }
}

@media only screen and (min-width: 801px) {
    .justify-content-between {
        display: flex;
        justify-content: space-between;
    }
}

.jobblock {
    max-width:400px;
    border-left: solid 1px grey; 
    padding-left:10px;
}