     private func shareStepsImage(steps:[MLinearEquationsSolutionStep])
     {
         let totalWidth:CGFloat = viewSolution.collectionView.contentSize.width
-        var totalHeight:CGFloat = 0
+        var totalHeight:CGFloat = kSmallFooterHeight
         
         for step:MLinearEquationsSolutionStep in steps
         {

    private let kBarHeight:CGFloat = 81
    private let kFooterHeight:CGFloat = 50
    private let kCellHeight:CGFloat = 25
    private let kSmallFooterHeight:CGFloat = 20
    
    init(project:DProject)
    {

        context.setFillColor(UIColor.white.cgColor)
        context.fill(frame)
        
        var positionY:CGFloat = kSmallFooterHeight
        
        for step:MLinearEquationsSolutionStep in steps
        {
