You can try below.
<div layout="row" layout-wrap> <div flex-gt-sm="{{vm.data.mode === 'ADD' ? 50: 25}}"></div> <div flex-gt-sm="{{vm.data.mode === 'ADD' ? 50: 25}}"></div> <div flex-gt-sm="{{vm.data.mode === 'ADD' ? 50: 25}}"></div> </div>
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