CSS rule in conflict (5.0.0 B!)

Please review the rules below. There is a conflict about
in font size,

.ipsWidget__header {
    flex: 0 0 auto;
    --i-co: var(--i-widget-header--co);
    color: var(--i-co);
    background-color: var(--i-widget-header--ba-co);
    font-size: 1.1em;
    font-weight: 600;
}
.ipsBox__header, .ipsWidget__header, .ipsInnerBox__header {
    padding: 1em 1.2em;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1em;
    border-radius: calc(var(--i-box--bo-ra) - var(--i-box--bo-wi)) calc(var(--i-box--bo-ra) - var(--i-box--bo-wi)) 0 0;
    border-bottom: 1px solid var(--i-background_4);
    font-size: 1.4em;
    font-weight: 600;
}

After adding a widgets block, the header class gets the smaller font size - 1.1 em, not to 1.4 em