What is the offset or space between GUILayout elements?

These don’t quite line up because of the space between UI elements. I am curious if anyone happens to know the default space between GUILayout elements.

private Rect _settingsMenuTopBarArea;
private float _screenWidth = Screen.width;
private float _screenHeight = Screen.height;
private float _boxPosX = 0;
private float _boxPosY = Screen.height / 24;

private Rect _selectableButtonArea;
private float _selectableButtonsPosY = Screen.height / 18;
private float _selectableButtonHeight = Screen.height / 18;

private float _xOffset = Screen.width / 24;
private float _yOffset = Screen.height / 24;

public Rect displayArea;
private float _displayAreaPosX = Screen.width / 33;
private float _displayAreaPosY = Screen.height / 4.5f;
private float _displayAreaWidth = Screen.width - (Screen.width / 16);
private float _displayAreaHeight = Screen.height - (Screen.height / 6) * 2;

public GUIStyle myStyle = new GUIStyle ();
public GUIStyle buttonStyle = new GUIStyle ();
public GUIStyle gunsmithStyle = new GUIStyle ();

void Awake () {
	_settingsMenuTopBarArea = new Rect (_boxPosX + _xOffset, _boxPosY, _screenWidth - _xOffset * 2, _screenHeight);
	_selectableButtonArea = new Rect (_boxPosX, _selectableButtonsPosY + _boxPosY + _yOffset, _screenWidth, _selectableButtonHeight);

	displayArea = new Rect (_displayAreaPosX + (_xOffset / 2), _displayAreaPosY, _displayAreaWidth - _xOffset, _displayAreaHeight);

	myStyle.fontSize = (int)(Screen.width * 0.03f);
	myStyle.normal.textColor = Color.white;

	buttonStyle.fontSize = (int)(Screen.width * 0.015f);
	buttonStyle.normal.textColor = Color.white;
}

void OnGUI () {
	if (MenuManager._settingsMenuOpen) {
		GUI.color = new Color (1f, 1f, 1f, .75f);

		SettingsMenuTopBar ();
		SelectableButtons ();
		DisplayIdentityArea ();

		GUI.color = new Color (1f, 1f, 1f, 1f);
	}
}

void SettingsMenuTopBar () {
	GUILayout.BeginArea (_settingsMenuTopBarArea);
	GUILayout.BeginHorizontal (GUILayout.ExpandWidth (true), GUILayout.Height (Screen.height / 12));

	GUILayout.Box ("MENU", myStyle, GUILayout.Width (Screen.width / 8), GUILayout.Height (Screen.height / 14));

	GUILayout.EndHorizontal ();
	GUILayout.EndArea ();
}

void SelectableButtons () {
	float buttonPadding = 2.5f;

	GUILayout.BeginArea (_selectableButtonArea);
	GUILayout.BeginHorizontal (GUILayout.Width ((_screenWidth / 1.5f) - _xOffset * 2), GUILayout.Height (_selectableButtonHeight));
	GUILayout.Space (_xOffset * 2);

	if (GUILayout.Button ("IDENTITY", buttonStyle, GUILayout.ExpandHeight (true))) {
		DisplayIdentityArea ();
	}
	GUILayout.Space (buttonPadding);

	if (GUILayout.Button ("CHALLANGES", buttonStyle, GUILayout.ExpandHeight (true))) {
		DisplayChallengesArea ();
	}
	GUILayout.Space (buttonPadding);

	if (GUILayout.Button ("BARRACKS", buttonStyle, GUILayout.ExpandHeight (true))) {
		DisplayBarracksArea ();
	}
	GUILayout.Space (buttonPadding);

	if (GUILayout.Button ("MEDIA", buttonStyle, GUILayout.ExpandHeight (true))) {
		DisplayMediaArea ();
	}
	GUILayout.Space (buttonPadding);

	if (GUILayout.Button ("OPTIONS", buttonStyle, GUILayout.ExpandHeight (true))) {
		DisplayOptionsArea ();
	}

	GUILayout.EndHorizontal ();
	GUILayout.EndArea ();
}

void DisplayIdentityArea () {
	GUILayout.BeginArea (displayArea);
//	GUILayout.Box ("Box", GUILayout.ExpandWidth (true), GUILayout.ExpandHeight (true));
	GUILayout.BeginHorizontal (GUILayout.ExpandWidth (true), GUILayout.Height (displayArea.height / 1.6f));

	GUILayout.Box ("", GUILayout.Width ((displayArea.width / 3) * 2 + Screen.width / 128), GUILayout.Height (displayArea.height / 1.6f));

	GUILayout.BeginVertical ();

	GUILayout.Box ("", GUILayout.Width (displayArea.width / 3.1f), GUILayout.Height (displayArea.height / 2.6f));
	GUILayout.Box ("", GUILayout.Width (displayArea.width / 3.1f), GUILayout.ExpandHeight (true));

	GUILayout.EndVertical ();
	GUILayout.EndHorizontal ();

	GUILayout.BeginHorizontal (GUILayout.ExpandWidth (true), GUILayout.ExpandHeight (true));

	GUILayout.Box ("", GUILayout.Width (displayArea.width / 3), GUILayout.ExpandHeight (true));
	GUILayout.Box ("", GUILayout.Width (displayArea.width / 3), GUILayout.ExpandHeight (true));
	GUILayout.Box ("", GUILayout.Width (displayArea.width / 3.075f), GUILayout.ExpandHeight (true));

	GUILayout.EndHorizontal ();

	GUILayout.EndArea ();
}

void DisplayChallengesArea () {

}

void DisplayBarracksArea () {

}

void DisplayMediaArea () {

}

void DisplayOptionsArea () {

}

So after putzing around, everything ended up adjusting itself once I added a GUIStyle. I actually had to go in and add my own GUILayout.Space () to everything. I will update my code once I finish updating it in working condition just in case anyone else runs across this issue.