.container {
    display:flex;
    flex-direction:column;
    width:500px;
    height:500px;
    border:black 3px solid;
    border-radius:15px;
    align-items:center;
    justify-content:center;
    text-align:center;
}

.mainContainer {
    display:flex;
    flex-direction:column;
    align-items:center;
    width: 100%;
    justify-content:center;
    text-align:center;
}