I want to use a rich text box in Sharepoint 2013, as shown in the image below. How can i do this?

I have already used the code below.
<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<SharePoint:InputFormTextBox ID="RichTextField1" runat="server" TextMode="MultiLine" RichTextMode="FullHtml" Columns="20" Rows="10"/>
but I could not get what I needed. I got a simple multi-line text box with a scroll.
Thanks for answers.

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