.form-search-form { @mixin row-base { display: flex; .column-name { flex: 1; min-width: 0; } .column-url { flex: 5; min-width: 0; } .column-option { text-align: right; flex-basis: 5rem; } } &-header { @include row-base; font-weight: bold; } &-row { @include row-base; } }