template do not follow Angular css-encapsulation

[MammadK]

as shown below, for some reason angular css encapsulation attributes only applies to the dp-date-picker element and not child elements.

as you can see, after compilation, angular add unique attributes to all html elements and styles that belongs to a component. so it's important to fix this issue otherwise any costume styling will not apply to datepicker...thanks

[fingerpich]

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