Bangladesh start were quite good and it was look like they gonna easily finished such small required target because at that time they have just required 5 runs per over which was not a big deal for them but later after dismissal of thier few important player they lose thier confidence and the momentum set by opener has been broked and Thier decline has about to begin. Anyway Bangladesh has bright cricket because they have some quality pacer which can put any big player in trouble.
It's just a start no doubt Bangladesh lose but they can make it better by working on thier mistakes. They give indian a strong fight but unable to continue it long. While compared to them indian start were much more improved especially thier oppner batter  partnership with Thier captain and here the most damage has been done.