How do you wrap the text automatically? I have tried several approaches but none of them it works.

Data type for the Description field is: Rich Text Area(131072)

Visualforce page:

<apex:outputText value="{!SUBSTITUTE(description,'\n','\\\n')}"            
                      escape="false" style="white-space:pre;"/>

Controller:

 public String Description {get;set;}
 

in the controller constructor:

 myobject__c = /*soql*/
 Description = myboject__c.Description__c;

Screen shot: