RTL/src/app/lnd/channels/channel-closed/channel-closed.component.scss

.mat-column-close_type {
    flex: 0 0 16%;
    min-width: 160px;
}

.mat-column-chan_id {
    flex: 0 0 17%;
    min-width: 170px;
}

table {
    width:100%;
}