-(float)sizeContentHeight:(NSString *)content
{
CGSize size = CGSizeMake(self.view.bounds.size.width-78, NSIntegerMax);
NSDictionary *dict = @{NSFontAttributeName: [UIFont systemFontOfSize:14]};
CGRect rect = [content boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin attributes:dict context:nil];
return rect.size.height;
}