C# Abstract class issue

Hi I wrote Abstarct class but i need to know this correct,i feel something is not write see below my code
Abstarct class

 abstract class Display
    {

       public abstract void DisplayDetails();
        

    }
}

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Calling

 class Email:Display
    {

        private string strEmail;
        private string fromPassword = "123456";

        public string EmailResults
        {
            get { return this.strEmail; }
            set { this.strEmail = value; }
        }

        public override void DisplayDetails()
        {
            EmailResults = "Send email successfully!!!";
        }

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Please let someone know where is wrong ,how to do implement with abstract class.thx