body {
    font-family: 'Open Sans', sans-serif;
    padding: 1rem;
}

.text-c4-1 {
    color: #4d4d4d;
}

.d-flex {
    display: flex;
}

.d-none {
    display: none;
}

.flex-column {
    flex-direction: column;
}

.justify-content-center {
    justify-content: center;
}

.flex-grow-1 {
    flex-grow: 1;
}