diff --git a/client/src/components/layouts/global.css b/client/src/components/layouts/global.css
index 8c7a9339306..4449b9bff46 100644
--- a/client/src/components/layouts/global.css
+++ b/client/src/components/layouts/global.css
@@ -511,6 +511,10 @@ hr {
   text-align: center;
 }
 
+.challenge-instructions table tbody tr:nth-of-type(odd) {
+  background-color: var(--tertiary-background);
+}
+
 .help-block {
   color: var(--quaternary-color);
 }
diff --git a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/adjust-the-hue-of-a-color.md b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/adjust-the-hue-of-a-color.md
index 2d7852df615..a01219acc3b 100644
--- a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/adjust-the-hue-of-a-color.md
+++ b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/adjust-the-hue-of-a-color.md
@@ -19,7 +19,7 @@ Colors have several characteristics including hue, saturation, and lightness. CS
 
 Here are a few examples of using `hsl()` with fully-saturated, normal lightness colors:
 
-<table class='table table-striped'><thead><tr><th>Color</th><th>HSL</th></tr></thead><tbody><tr><td>red</td><td>hsl(0, 100%, 50%)</td></tr><tr><td>yellow</td><td>hsl(60, 100%, 50%)</td></tr><tr><td>green</td><td>hsl(120, 100%, 50%)</td></tr><tr><td>cyan</td><td>hsl(180, 100%, 50%)</td></tr><tr><td>blue</td><td>hsl(240, 100%, 50%)</td></tr><tr><td>magenta</td><td>hsl(300, 100%, 50%)</td></tr></tbody></table>
+<table><thead><tr><th>Color</th><th>HSL</th></tr></thead><tbody><tr><td>red</td><td>hsl(0, 100%, 50%)</td></tr><tr><td>yellow</td><td>hsl(60, 100%, 50%)</td></tr><tr><td>green</td><td>hsl(120, 100%, 50%)</td></tr><tr><td>cyan</td><td>hsl(180, 100%, 50%)</td></tr><tr><td>blue</td><td>hsl(240, 100%, 50%)</td></tr><tr><td>magenta</td><td>hsl(300, 100%, 50%)</td></tr></tbody></table>
 
 # --instructions--
 
diff --git a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/learn-about-tertiary-colors.md b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/learn-about-tertiary-colors.md
index 7f4bbbd27c9..1be76bc8ef9 100644
--- a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/learn-about-tertiary-colors.md
+++ b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/learn-about-tertiary-colors.md
@@ -16,7 +16,7 @@ There are various methods of selecting different colors that result in a harmoni
 
 Here are three colors created using the split-complement scheme:
 
-<table class='table table-striped'><thead><tr><th>Color</th><th>Hex Code</th></tr></thead><thead></thead><tbody><tr><td>orange</td><td>#FF7F00</td></tr><tr><td>cyan</td><td>#00FFFF</td></tr><tr><td>raspberry</td><td>#FF007F</td></tr></tbody></table>
+<table><thead><tr><th>Color</th><th>Hex Code</th></tr></thead><thead></thead><tbody><tr><td>orange</td><td>#FF7F00</td></tr><tr><td>cyan</td><td>#00FFFF</td></tr><tr><td>raspberry</td><td>#FF007F</td></tr></tbody></table>
 
 # --instructions--
 
diff --git a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-the-text-transform-property-to-make-text-uppercase.md b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-the-text-transform-property-to-make-text-uppercase.md
index e5dc9362c67..2cd3670b7ca 100644
--- a/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-the-text-transform-property-to-make-text-uppercase.md
+++ b/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/use-the-text-transform-property-to-make-text-uppercase.md
@@ -13,7 +13,7 @@ The `text-transform` property in CSS is used to change the appearance of text. I
 
 The following table shows how the different `text-transform`values change the example text "Transform me".
 
-<table class='table table-striped'><thead><tr><th>Value</th><th>Result</th></tr></thead><tbody><tr><td><code>lowercase</code></td><td>"transform me"</td></tr><tr><td><code>uppercase</code></td><td>"TRANSFORM ME"</td></tr><tr><td><code>capitalize</code></td><td>"Transform Me"</td></tr><tr><td><code>initial</code></td><td>Use the default value</td></tr><tr><td><code>inherit</code></td><td>Use the <code>text-transform</code> value from the parent element</td></tr><tr><td><code>none</code></td><td><strong>Default:</strong> Use the original text</td></tr></tbody></table>
+<table><thead><tr><th>Value</th><th>Result</th></tr></thead><tbody><tr><td><code>lowercase</code></td><td>"transform me"</td></tr><tr><td><code>uppercase</code></td><td>"TRANSFORM ME"</td></tr><tr><td><code>capitalize</code></td><td>"Transform Me"</td></tr><tr><td><code>initial</code></td><td>Use the default value</td></tr><tr><td><code>inherit</code></td><td>Use the <code>text-transform</code> value from the parent element</td></tr><tr><td><code>none</code></td><td><strong>Default:</strong> Use the original text</td></tr></tbody></table>
 
 # --instructions--
 
diff --git a/curriculum/challenges/english/01-responsive-web-design/basic-css/use-abbreviated-hex-code.md b/curriculum/challenges/english/01-responsive-web-design/basic-css/use-abbreviated-hex-code.md
index fb6c62be8b6..7b12f11f092 100644
--- a/curriculum/challenges/english/01-responsive-web-design/basic-css/use-abbreviated-hex-code.md
+++ b/curriculum/challenges/english/01-responsive-web-design/basic-css/use-abbreviated-hex-code.md
@@ -19,7 +19,7 @@ This reduces the total number of possible colors to around 4,000. But browsers w
 
 Go ahead, try using the abbreviated hex codes to color the correct elements.
 
-<table class='table table-striped'><tbody><tr><th>Color</th><th>Short Hex Code</th></tr><tr><td>Cyan</td><td><code>#0FF</code></td></tr><tr><td>Green</td><td><code>#0F0</code></td></tr><tr><td>Red</td><td><code>#F00</code></td></tr><tr><td>Fuchsia</td><td><code>#F0F</code></td></tr></tbody></table>
+<table><tbody><tr><th>Color</th><th>Short Hex Code</th></tr><tr><td>Cyan</td><td><code>#0FF</code></td></tr><tr><td>Green</td><td><code>#0F0</code></td></tr><tr><td>Red</td><td><code>#F00</code></td></tr><tr><td>Fuchsia</td><td><code>#F0F</code></td></tr></tbody></table>
 
 # --hints--
 
diff --git a/curriculum/challenges/english/01-responsive-web-design/basic-css/use-hex-code-to-mix-colors.md b/curriculum/challenges/english/01-responsive-web-design/basic-css/use-hex-code-to-mix-colors.md
index c72783eba8b..d2a93e41223 100644
--- a/curriculum/challenges/english/01-responsive-web-design/basic-css/use-hex-code-to-mix-colors.md
+++ b/curriculum/challenges/english/01-responsive-web-design/basic-css/use-hex-code-to-mix-colors.md
@@ -23,7 +23,7 @@ The digit `F` is the highest number in hex code, and represents the maximum poss
 
 Replace the color words in our `style` element with their correct hex codes.
 
-<table class='table table-striped'><tbody><tr><th>Color</th><th>Hex Code</th></tr><tr><td>Dodger Blue</td><td><code>#1E90FF</code></td></tr><tr><td>Green</td><td><code>#00FF00</code></td></tr><tr><td>Orange</td><td><code>#FFA500</code></td></tr><tr><td>Red</td><td><code>#FF0000</code></td></tr></tbody></table>
+<table><tbody><tr><th>Color</th><th>Hex Code</th></tr><tr><td>Dodger Blue</td><td><code>#1E90FF</code></td></tr><tr><td>Green</td><td><code>#00FF00</code></td></tr><tr><td>Orange</td><td><code>#FFA500</code></td></tr><tr><td>Red</td><td><code>#FF0000</code></td></tr></tbody></table>
 
 # --hints--
 
diff --git a/curriculum/challenges/english/01-responsive-web-design/basic-css/use-rgb-to-mix-colors.md b/curriculum/challenges/english/01-responsive-web-design/basic-css/use-rgb-to-mix-colors.md
index 65af4b7769e..c8e3a6e16de 100644
--- a/curriculum/challenges/english/01-responsive-web-design/basic-css/use-rgb-to-mix-colors.md
+++ b/curriculum/challenges/english/01-responsive-web-design/basic-css/use-rgb-to-mix-colors.md
@@ -15,7 +15,7 @@ Just like with hex code, you can mix colors in RGB by using combinations of diff
 
 Replace the hex codes in our `style` element with their correct RGB values.
 
-<table class='table table-striped'><tbody><tr><th>Color</th><th>RGB</th></tr><tr><td>Blue</td><td><code>rgb(0, 0, 255)</code></td></tr><tr><td>Red</td><td><code>rgb(255, 0, 0)</code></td></tr><tr><td>Orchid</td><td><code>rgb(218, 112, 214)</code></td></tr><tr><td>Sienna</td><td><code>rgb(160, 82, 45)</code></td></tr></tbody></table>
+<table><tbody><tr><th>Color</th><th>RGB</th></tr><tr><td>Blue</td><td><code>rgb(0, 0, 255)</code></td></tr><tr><td>Red</td><td><code>rgb(255, 0, 0)</code></td></tr><tr><td>Orchid</td><td><code>rgb(218, 112, 214)</code></td></tr><tr><td>Sienna</td><td><code>rgb(160, 82, 45)</code></td></tr></tbody></table>
 
 # --hints--
 
diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/counting-cards.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/counting-cards.md
index 8ff09d8ce8c..b640a6dbb9e 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/counting-cards.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/counting-cards.md
@@ -13,7 +13,7 @@ In the casino game Blackjack, a player can determine whether they have an advant
 
 Having more high cards remaining in the deck favors the player. Each card is assigned a value according to the table below. When the count is positive, the player should bet high. When the count is zero or negative, the player should bet low.
 
-<table class='table table-striped'><thead><tr><th>Count Change</th><th>Cards</th></tr></thead><tbody><tr><td>+1</td><td>2, 3, 4, 5, 6</td></tr><tr><td>0</td><td>7, 8, 9</td></tr><tr><td>-1</td><td>10, 'J', 'Q', 'K', 'A'</td></tr></tbody></table>
+<table><thead><tr><th>Count Change</th><th>Cards</th></tr></thead><tbody><tr><td>+1</td><td>2, 3, 4, 5, 6</td></tr><tr><td>0</td><td>7, 8, 9</td></tr><tr><td>-1</td><td>10, 'J', 'Q', 'K', 'A'</td></tr></tbody></table>
 
 You will write a card counting function. It will receive a `card` parameter, which can be a number or a string, and increment or decrement the global `count` variable according to the card's value (see table). The function will then return a string with the current count and the string `Bet` if the count is positive, or `Hold` if the count is zero or negative. The current count and the player's decision (`Bet` or `Hold`) should be separated by a single space.
 
diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/escape-sequences-in-strings.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/escape-sequences-in-strings.md
index dce636b262c..5cd3d012444 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/escape-sequences-in-strings.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/escape-sequences-in-strings.md
@@ -11,7 +11,7 @@ dashedName: escape-sequences-in-strings
 
 Quotes are not the only characters that can be <dfn>escaped</dfn> inside a string. Escape sequences allow you to use characters you may not otherwise be able to use in a string.
 
-<table class='table table-striped'><thead><tr><th>Code</th><th>Output</th></tr></thead><tbody><tr><td><code>\'</code></td><td>single quote</td></tr><tr><td><code>\"</code></td><td>double quote</td></tr><tr><td><code>\\</code></td><td>backslash</td></tr><tr><td><code>\n</code></td><td>newline</td></tr><tr><td><code>\t</code></td><td>tab</td></tr><tr><td><code>\r</code></td><td>carriage return</td></tr><tr><td><code>\b</code></td><td>backspace</td></tr><tr><td><code>\f</code></td><td>form feed</td></tr></tbody></table>
+<table><thead><tr><th>Code</th><th>Output</th></tr></thead><tbody><tr><td><code>\'</code></td><td>single quote</td></tr><tr><td><code>\"</code></td><td>double quote</td></tr><tr><td><code>\\</code></td><td>backslash</td></tr><tr><td><code>\n</code></td><td>newline</td></tr><tr><td><code>\t</code></td><td>tab</td></tr><tr><td><code>\r</code></td><td>carriage return</td></tr><tr><td><code>\b</code></td><td>backspace</td></tr><tr><td><code>\f</code></td><td>form feed</td></tr></tbody></table>
 
 *Note that the backslash itself must be escaped in order to display as a backslash.*
 
diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/golf-code.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/golf-code.md
index 3450f8406cb..76f030bbccd 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/golf-code.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/golf-code.md
@@ -13,7 +13,7 @@ In the game of Golf, each hole has a `par`, meaning, the average number of `stro
 
 Your function will be passed `par` and `strokes` arguments. Return the correct string according to this table which lists the strokes in order of priority; top (highest) to bottom (lowest):
 
-<table class='table table-striped'><thead><tr><th>Strokes</th><th>Return</th></tr></thead><tbody><tr><td>1</td><td>"Hole-in-one!"</td></tr><tr><td>&#x3C;= par - 2</td><td>"Eagle"</td></tr><tr><td>par - 1</td><td>"Birdie"</td></tr><tr><td>par</td><td>"Par"</td></tr><tr><td>par + 1</td><td>"Bogey"</td></tr><tr><td>par + 2</td><td>"Double Bogey"</td></tr><tr><td>>= par + 3</td><td>"Go Home!"</td></tr></tbody></table>
+<table><thead><tr><th>Strokes</th><th>Return</th></tr></thead><tbody><tr><td>1</td><td>"Hole-in-one!"</td></tr><tr><td>&#x3C;= par - 2</td><td>"Eagle"</td></tr><tr><td>par - 1</td><td>"Birdie"</td></tr><tr><td>par</td><td>"Par"</td></tr><tr><td>par + 1</td><td>"Bogey"</td></tr><tr><td>par + 2</td><td>"Double Bogey"</td></tr><tr><td>>= par + 3</td><td>"Go Home!"</td></tr></tbody></table>
 
 `par` and `strokes` will always be numeric and positive. We have added an array of all the names for your convenience.
 
diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register.md
index bc92f65b8e1..39e0fe0c652 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register.md
@@ -20,7 +20,7 @@ Return `{status: "CLOSED", change: [...]}` with cash-in-drawer as the value for
 
 Otherwise, return `{status: "OPEN", change: [...]}`, with the change due in coins and bills, sorted in highest to lowest order, as the value of the `change` key.
 
-<table class='table table-striped'><tbody><tr><th>Currency Unit</th><th>Amount</th></tr><tr><td>Penny</td><td>$0.01 (PENNY)</td></tr><tr><td>Nickel</td><td>$0.05 (NICKEL)</td></tr><tr><td>Dime</td><td>$0.1 (DIME)</td></tr><tr><td>Quarter</td><td>$0.25 (QUARTER)</td></tr><tr><td>Dollar</td><td>$1 (ONE)</td></tr><tr><td>Five Dollars</td><td>$5 (FIVE)</td></tr><tr><td>Ten Dollars</td><td>$10 (TEN)</td></tr><tr><td>Twenty Dollars</td><td>$20 (TWENTY)</td></tr><tr><td>One-hundred Dollars</td><td>$100 (ONE HUNDRED)</td></tr></tbody></table>
+<table><tbody><tr><th>Currency Unit</th><th>Amount</th></tr><tr><td>Penny</td><td>$0.01 (PENNY)</td></tr><tr><td>Nickel</td><td>$0.05 (NICKEL)</td></tr><tr><td>Dime</td><td>$0.1 (DIME)</td></tr><tr><td>Quarter</td><td>$0.25 (QUARTER)</td></tr><tr><td>Dollar</td><td>$1 (ONE)</td></tr><tr><td>Five Dollars</td><td>$5 (FIVE)</td></tr><tr><td>Ten Dollars</td><td>$10 (TEN)</td></tr><tr><td>Twenty Dollars</td><td>$20 (TWENTY)</td></tr><tr><td>One-hundred Dollars</td><td>$100 (ONE HUNDRED)</td></tr></tbody></table>
 
 See below for an example of a cash-in-drawer array:
 
diff --git a/curriculum/challenges/english/10-coding-interview-prep/data-structures/typed-arrays.md b/curriculum/challenges/english/10-coding-interview-prep/data-structures/typed-arrays.md
index b992af729a4..5d1e598b75f 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/data-structures/typed-arrays.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/data-structures/typed-arrays.md
@@ -20,7 +20,7 @@ However, in the world of high performance and different element types, sometimes
 
 <dfn>Typed arrays</dfn> are the answer to this problem. You are now able to say how much memory you want to give an array. Below is a basic overview of the different types of arrays available and the size in bytes for each element in that array.
 
-<table class='table table-striped'><tbody><tr><th>Type</th><th>Each element size in bytes</th></tr><tr><td><code>Int8Array</code></td><td>1</td></tr><tr><td><code>Uint8Array</code></td><td>1</td></tr><tr><td><code>Uint8ClampedArray</code></td><td>1</td></tr><tr><td><code>Int16Array</code></td><td>2</td></tr><tr><td><code>Uint16Array</code></td><td>2</td></tr><tr><td><code>Int32Array</code></td><td>4</td></tr><tr><td><code>Uint32Array</code></td><td>4</td></tr><tr><td><code>Float32Array</code></td><td>4</td></tr><tr><td><code>Float64Array</code></td><td>8</td></tr></tbody></table>
+<table><tbody><tr><th>Type</th><th>Each element size in bytes</th></tr><tr><td><code>Int8Array</code></td><td>1</td></tr><tr><td><code>Uint8Array</code></td><td>1</td></tr><tr><td><code>Uint8ClampedArray</code></td><td>1</td></tr><tr><td><code>Int16Array</code></td><td>2</td></tr><tr><td><code>Uint16Array</code></td><td>2</td></tr><tr><td><code>Int32Array</code></td><td>4</td></tr><tr><td><code>Uint32Array</code></td><td>4</td></tr><tr><td><code>Float32Array</code></td><td>4</td></tr><tr><td><code>Float64Array</code></td><td>8</td></tr></tbody></table>
 
 There are two ways in creating these kind of arrays. One way is to create it directly. Below is how to create a 3 length `Int16Array`.
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/build-a-cash-register-project/cash-register.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/build-a-cash-register-project/cash-register.md
index 4653f6358b1..c98d513eb13 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/build-a-cash-register-project/cash-register.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/build-a-cash-register-project/cash-register.md
@@ -20,7 +20,7 @@ Return `{status: "CLOSED", change: [...]}` with cash-in-drawer as the value for
 
 Otherwise, return `{status: "OPEN", change: [...]}`, with the change due in coins and bills, sorted in highest to lowest order, as the value of the `change` key.
 
-<table class='table table-striped'><tbody><tr><th>Currency Unit</th><th>Amount</th></tr><tr><td>Penny</td><td>$0.01 (PENNY)</td></tr><tr><td>Nickel</td><td>$0.05 (NICKEL)</td></tr><tr><td>Dime</td><td>$0.1 (DIME)</td></tr><tr><td>Quarter</td><td>$0.25 (QUARTER)</td></tr><tr><td>Dollar</td><td>$1 (ONE)</td></tr><tr><td>Five Dollars</td><td>$5 (FIVE)</td></tr><tr><td>Ten Dollars</td><td>$10 (TEN)</td></tr><tr><td>Twenty Dollars</td><td>$20 (TWENTY)</td></tr><tr><td>One-hundred Dollars</td><td>$100 (ONE HUNDRED)</td></tr></tbody></table>
+<table><tbody><tr><th>Currency Unit</th><th>Amount</th></tr><tr><td>Penny</td><td>$0.01 (PENNY)</td></tr><tr><td>Nickel</td><td>$0.05 (NICKEL)</td></tr><tr><td>Dime</td><td>$0.1 (DIME)</td></tr><tr><td>Quarter</td><td>$0.25 (QUARTER)</td></tr><tr><td>Dollar</td><td>$1 (ONE)</td></tr><tr><td>Five Dollars</td><td>$5 (FIVE)</td></tr><tr><td>Ten Dollars</td><td>$10 (TEN)</td></tr><tr><td>Twenty Dollars</td><td>$20 (TWENTY)</td></tr><tr><td>One-hundred Dollars</td><td>$100 (ONE HUNDRED)</td></tr></tbody></table>
 
 See below for an example of a cash-in-drawer array: