diff --git a/2-ui/1-document/11-coordinates/1-find-point-coordinates/solution.md b/2-ui/1-document/11-coordinates/1-find-point-coordinates/solution.md
@@ -1,8 +1,8 @@
-# Outer corners

-Outer corners are basically what we get from [elem.getBoundingClientRect()](https://developer.mozilla.org/en-US/docs/DOM/element.getBoundingClientRect).

-Coordinates of the upper-left corner `answer1` and the bottom-right corner `answer2`:

```js
let coords = elem.getBoundingClientRect();
@@ -11,19 +11,19 @@ let answer1 = [coords.left, coords.top];
let answer2 = [coords.right, coords.bottom];
```

-# Left-upper inner corner

-That differs from the outer corner by the border width. A reliable way to get the distance is `clientLeft/clientTop`:

```js
let answer3 = [coords.left + field.clientLeft, coords.top + field.clientTop];
```

-# Right-bottom inner corner

-In our case we need to substract the border size from the outer coordinates.

-We could use CSS way:

```js
let answer4 = [
@@ -32,7 +32,7 @@ let answer4 = [
];
```

-An alternative way would be to add `clientWidth/clientHeight` to coordinates of the left-upper corner. That's probably even better:

```js
let answer4 = [

diff --git a/2-ui/1-document/11-coordinates/2-position-at/solution.md b/2-ui/1-document/11-coordinates/2-position-at/solution.md
@@ -1,4 +1,4 @@
-In this task we only need to accurately calculate the coordinates. See the code for details.

-Please note: the elements must be in the document to read `offsetHeight` and other properties.
-A hidden (`display:none`) or out of the document element has no size.
diff --git a/2-ui/1-document/11-coordinates/2-position-at/task.md b/2-ui/1-document/11-coordinates/2-position-at/task.md
@@ -2,17 +2,17 @@ importance: 5

---

-# Show a note near the element

-Create a function `positionAt(anchor, position, elem)` that positions `elem`, depending on `position` near `anchor` element.

-The `position` must be a string with any one of 3 values:
-- `"top"` - position `elem` right above `anchor`
-- `"right"` - position `elem` immediately at the right of `anchor`
-- `"bottom"` - position `elem` right below `anchor`

-It's used inside function `showNote(anchor, position, html)`, provided in the task source code, that creates a "note" element with given `html` and shows it at the given `position` near the `anchor`.

-Here's the demo of notes:

[iframe src="solution" height="350" border="1" link]
diff --git a/2-ui/1-document/11-coordinates/3-position-at-absolute/solution.md b/2-ui/1-document/11-coordinates/3-position-at-absolute/solution.md
@@ -1,4 +1,4 @@
-The solution is actually pretty simple:

-- Use `position:absolute` in CSS instead of `position:fixed` for `.note`.
-- Use the function [getCoords()](info:coordinates#getCoords) from the chapter <info:coordinates> to get document-relative coordinates.
diff --git a/2-ui/1-document/11-coordinates/3-position-at-absolute/task.md b/2-ui/1-document/11-coordinates/3-position-at-absolute/task.md
@@ -2,10 +2,10 @@ importance: 5

---

-# Show a note near the element (absolute)

-Modify the solution of the [previous task](info:task/position-at) so that the note uses `position:absolute` instead of `position:fixed`.

-That will prevent its "runaway" from the element when the page scrolls.

-Take the solution of that task as a starting point. To test the scroll, add the style `<body style="height: 2000px">`.
diff --git a/2-ui/1-document/11-coordinates/4-position-inside-absolute/task.md b/2-ui/1-document/11-coordinates/4-position-inside-absolute/task.md
@@ -2,27 +2,27 @@ importance: 5

---

-# Position the note inside (absolute)

-Extend the previous task <info:task/position-at-absolute>: teach the function  `positionAt(anchor, position, elem)` to insert `elem` inside the `anchor`.

-New values for `position`:

-- `top-out`, `right-out`, `bottom-out` -- work the same as before, they insert the `elem` over/right/under `anchor`.
-- `top-in`, `right-in`, `bottom-in` -- insert `elem` inside the `anchor`: stick it to the upper/right/bottom edge.

-For instance:

```js
-// shows the note above blockquote
positionAt(blockquote, "top-out", note);

-// shows the note inside blockquote, at the top
positionAt(blockquote, "top-in", note);
```

-The result:

[iframe src="solution" height="310" border="1" link]

-As the source code, take the solution of the task <info:task/position-at-absolute>.