html, body, [class = container] {
    height: 100%;
    width: 100%;
    font-size: 25px;
    margin:0;
    padding:0;
}

.menu{
    cursor:pointer;
    padding:1rem;

}
.row-between {
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: flex-start;
}
.row-start {
    display: flex;
    flex-flow: row nowrap;
    justify-content: start;
    align-items: stretch;
}

.row-center {
    display: flex;
    flex-flow: row nowrap;
    justify-content: center;
    align-items: center;
}

.row-end {
    display: flex;
    flex-flow: row nowrap;
    justify-content: flex-end;
    align-items: center;
}

.column-start {
    display: flex;
    flex-flow: column nowrap;
    justify-content: flex-start;
    align-items: stretch;
}

.column-center {
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
}

.column-end {
    display: flex;
    flex-flow: column nowrap;
    justify-content: flex-end;
    align-items: center;
}


.item-none {
    flex: none;
}

.item-auto {
    flex: auto;
}