diff --git a/1-js/05-data-types/03-string/article.md b/1-js/05-data-types/03-string/article.md
index ebfda974..b7bb907e 100644
--- a/1-js/05-data-types/03-string/article.md
+++ b/1-js/05-data-types/03-string/article.md
@@ -43,7 +43,6 @@ Looks natural, right? But single or double quotes do not work this way.
 
 If we use them and try to use multiple lines, there'll be an error:
 
-
 ```js run
 let guestList = "Guests:  // Error: Unexpected token ILLEGAL
   * John";
@@ -53,7 +52,6 @@ Single and double quotes come from ancient times of language creation when the n
 
 Backticks also allow us to specify a "template function" before the first backtick. The syntax is: <code>func&#96;string&#96;</code>. The function `func` is called automatically, receives the string and embedded expressions and can process them. You can read more about it in the [docs](mdn:/JavaScript/Reference/Template_literals#Tagged_template_literals). This is called "tagged templates". This feature makes it easier to wrap strings into custom templating or other functionality, but it is rarely used.
 
-
 ## Special characters
 
 It is still possible to create multiline strings with single quotes by using a so-called "newline character", written as `\n`, which denotes a line break:
@@ -130,7 +128,6 @@ alert( `The backslash: \\` ); // The backslash: \
 
 ## String length
 
-
 The `length` property has the string length:
 
 ```js run
@@ -252,10 +249,8 @@ let str = 'Widget with id';
 alert( str.indexOf('id', 2) ) // 12
 ```
 
-
 If we're interested in all occurrences, we can run `indexOf` in a loop. Every new call is made with the position after the previous match:
 
-
 ```js run
 let str = 'As sly as a fox, as strong as an ox';
 
@@ -411,7 +406,6 @@ There are 3 methods in JavaScript to get a substring: `substring`, `substr` and
     alert( str.slice(-4, -1) ); // gif
     ```
 
-
 `str.substring(start [, end])`
 : Returns the part of the string *between* `start` and `end`.
 
@@ -419,7 +413,6 @@ There are 3 methods in JavaScript to get a substring: `substring`, `substr` and
 
     For instance:
 
-
     ```js run
     let str = "st*!*ring*/!*ify";
 
@@ -435,7 +428,6 @@ There are 3 methods in JavaScript to get a substring: `substring`, `substr` and
 
     Negative arguments are (unlike slice) not supported, they are treated as `0`.
 
-
 `str.substr(start [, length])`
 : Returns the part of the string from `start`, with the given `length`.
 
@@ -461,7 +453,6 @@ Let's recap these methods to avoid any confusion:
 | `substring(start, end)` | between `start` and `end` | negative values mean `0` |
 | `substr(start, length)` | from `start` get `length` characters | allows negative `start` |
 
-
 ```smart header="Which one to choose?"
 All of them can do the job. Formally, `substr` has a minor drawback: it is described not in the core JavaScript specification, but in Annex B, which covers browser-only features that exist mainly for historical reasons. So, non-browser environments may fail to support it. But in practice it works everywhere.
 
@@ -537,7 +528,6 @@ The characters are compared by their numeric code. The greater code means that t
 - All lowercase letters go after uppercase letters because their codes are greater.
 - Some letters like `Ö` stand apart from the main alphabet. Here, it's code is greater than anything from `a` to `z`.
 
-
 ### Correct comparisons
 
 The "right" algorithm to do string comparisons is more complex than it may seem, because alphabets are different for different languages.
@@ -667,7 +657,6 @@ In reality, this is not always the case. The reason being that the symbol `Ṩ`
 
 If you want to learn more about normalization rules and variants -- they are described in the appendix of the Unicode standard: [Unicode Normalization Forms](http://www.unicode.org/reports/tr15/), but for most practical purposes the information from this section is enough.
 
-
 ## Summary
 
 - There are 3 types of quotes. Backticks allow a string to span multiple lines and embed expressions `${…}`.