.block_subscription {margin: 0 0 30px;}
.block_subscription :is(.planSelect, .periodSelect) {display: inline-block;}
.block_subscription .boxPlanGroup.lined {border-bottom: 1px solid #ccc; margin-bottom: 20px; padding-bottom: 20px;}

@media (min-width: 576px) {
    .block_subscription :is(.planSelect, .periodSelect) {width: 300px;}
}

@media (min-width: 768px) {
    .block_subscription {margin: 0 0 60px;}
    .block_subscription .boxPlanGroup.lined {border-bottom: none; margin-bottom: 0; padding-bottom: 0;}
}