elow code's position to group similar colors, as it looks in the picture?

New Perspectives on HTML5, CSS3, and JavaScript
6th Edition
ISBN:9781305503922
Author:Patrick M. Carey
Publisher:Patrick M. Carey
Chapter3: Designing A Page Layout: Creating A Website For A Chocolatier
Section3.3: Visual Overview: Layout With Positioning Styles
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How can you change the below code's position to group similar colors, as it looks in the picture?

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Chapter 11</title>
<style>
main {
</head>
<body>
<main>
}
?>
position: relative;
}
span {
}
</style>
height: 40px;
width: 40px;
border: solid black 1px;
margin:1px;
display: inline-block;
top: 10px;
left: 10px;
z-index: -1;
<?php
echo "<h1>Using iterator: $iterator </h1>";
$red = 0;
$green = 0;
$blue = 0;
for ($red=0; $red<255&&$red>=0; $red+=$iterator) {
for($green=0; $green<255&&$green>=0; $green+=$iterator) {
for($blue=0; $blue<255&&$blue>=0; $blue+=$iterator) {
$hexred = sprintf('%02x', $red);
$hexgreen=sprintf('%02x', $green);
$hexblue-sprintf('%02x', $blue);
echo "<span style="background-color: rgb($red, $green, $blue); '
title=#$hexred$hexgreen$hexblue></span>";
$styleAttribute = "style='background-color: rgb(".$red.", 255, 255) "";
$titleAttribute = "title='$hexColor"";
Transcribed Image Text:<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Chapter 11</title> <style> main { </head> <body> <main> } ?> position: relative; } span { } </style> height: 40px; width: 40px; border: solid black 1px; margin:1px; display: inline-block; top: 10px; left: 10px; z-index: -1; <?php echo "<h1>Using iterator: $iterator </h1>"; $red = 0; $green = 0; $blue = 0; for ($red=0; $red<255&&$red>=0; $red+=$iterator) { for($green=0; $green<255&&$green>=0; $green+=$iterator) { for($blue=0; $blue<255&&$blue>=0; $blue+=$iterator) { $hexred = sprintf('%02x', $red); $hexgreen=sprintf('%02x', $green); $hexblue-sprintf('%02x', $blue); echo "<span style="background-color: rgb($red, $green, $blue); ' title=#$hexred$hexgreen$hexblue></span>"; $styleAttribute = "style='background-color: rgb(".$red.", 255, 255) ""; $titleAttribute = "title='$hexColor"";
Using iterator: 30
Transcribed Image Text:Using iterator: 30
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