.first-child

.first-child { flex-grow: 2; }

.second-child

.second-child { flex-grow: 1; }

.first-child

.first-child { flex-grow: 4; }

.second-child

.second-child { flex-grow: 1; }

.first-child

.first-child { flex-grow: 1; }

.second-child

.second-child { flex-grow: 1; }