.container {
    max-height: 400px;
    overflow-x: hidden;
    overflow-y: auto;
    padding: .5rem 1rem;
}

.header {
    text-align: right;
}

.invisible {
    visibility: hidden;
}

.form-check {
    display: inline-block;
    padding-left: 2rem;
    padding-right: .5rem;
}