.card {
    margin-bottom: 1.5rem;
}

.card-header {
    padding: .75rem 1.25rem;
    margin-bottom: 0;
    background-color: #f0f3f5;
    border-bottom: 1px solid #c8ced3;
}

.card-body {
    flex: 1 1 auto;
    padding: 1.25rem;
}

.card-header .border-bottom {
    border-bottom: 1px solid #c8ced3;
}