.mainDiv {
    margin-top: 5%;
    overflow-x: hidden;
    overflow-y: auto;
    max-height: 50vh;
}
.melding-container {
    border: 1px solid black !important;
    padding: 1vh!important;
    min-width: 30vw;
    max-width: 50vw;
    margin: 1vh;
    justify-content: center;
    align-items: center;
    text-align: center;
}