
Configure the opacity property
Program plan:
Include the HTML tag “<HTML>”.
- Include the title on the webpage using “<head>” tag.
- Open the “<meta>” tag to set the viewport for visible area of webpage.
- Include the title on the webpage using “<title>” tag.
- Include the style tag using “<style>” for internal style.
- Add the style for “body” element.
- Internal style for media queries to design the web page.
- Add the style for “wrapper” element.
- Add the style for “offer” element.
- Add the style for “offer a” element.
- Add the style for “nav” element.
- Add the style for “nav ul” element.
- Add the style for “nav li” element.
- Add the style for “nav a” element.
- Add the style for “nav a:link” element.
- Add the style for “nav a:visited” element.
- Add the style for “nav a:hover” element.
- Add the style for “main” element.
- Add the style for “header” element.
- Add the style for “h1” element.
- Add the style for “h2” element.
- Add the style for “figure” element.
- Add the style for “figcaption” element.
- Add the style for “footer” element.
- Open the body of the web page using “<body>” tag.
- Use the two-column layout to design the webpage using “div” tag with name “wrapper”.
- Open the header of the web page using “<header>” tag.
- Open the navigation link using “<nav>” tag.
- Open the main of the web page using “<main>” tag.
- Open the section of the web page using “<figure>” tag.
- Use the two-column layout to design the webpage using “div” tag with name “offer”.
- Open the footer of the web page using “<footer>” tag.
- Close all the tags.

The HTML code creates a webpage to configure the opacity to display the lighthouse figure; initially it displays figure at 50% opacity, then slowly changes to 100% when the user places the mouse over the figure area.
Explanation of Solution
Program:
Filename: index.html
<!-- html opening tag -->
<html lang="en">
<!-- head opening tag -->
<head>
<!-- Title opening tag -->
<title>Lighthouse Island Bistro</title>
<!--Define the meta tag-->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!--Style tag-->
<style>
/*Internal style for "*"*/
*{ box-sizing: border-box; }
/*Internal style for body tag*/
body
{
font-family: Verdana, Arial, sans-serif;
background-color: #00005D;
}
/*Internal style for div tag with id of "wrapper" "*/
#wrapper
{
background-color: #b3c7e6;
color: #000066;
width: 90%;
margin: auto;
min-width: 450px;
max-width: 1020px;
}
/*Internal style for header tag */
header
{
background-color: #869dc7;
background-image: url(lighthouselogo.jpg);
background-repeat: no-repeat;
color: #00005D;
padding: 10px;
}
/*Internal style for h1 tag */
header h1 { padding-left: 200px;}
/*Internal style for span tag */
header span
{
font-style: italic;
font-weight: bold;
color: #00005D;
padding-right: 15px;
text-align: right;
display: block;
}
/*Internal style for navigation tag */
nav
{
float: left;
width: 150px;
letter-spacing:0.1em;
font-weight: bold;
}
/*Internal style for navigation "unordered list" tag */
nav ul
{
list-style-type: none;
margin: 0;
padding: 0;
}
/*Internal style for navigation "list" tag */
nav li { border-bottom: 1px solid #ffffff;}
/*Internal style for nav "a" tag */
nav a
{
text-decoration: none;
display: block;
padding: 15px;
transition: background-color 2s linear;
}
/*Internal style for nav "a:link" tag */
nav a:link { color: #ffffff; }
/*Internal style for nav "a:visited" tag */
nav a:visited { color: #eaeaea; }
/*Internal style for nav "a:hover" tag */
nav a:hover
{
color: #869dc7;
background-color: #eaeaea;
}
/*Internal style for main tag */
main
{ background-color: #ffffff;
color: #000000;
padding: 10px 20px;
overflow: auto;
}
/*Internal style for h2 tag */
h2
{
color: #869dc7;
font-family: arial, sans-serif;
margin: 5px;
}
/*Internal style for figure tag */
figure
{ float: right;
margin: 10px;
padding: 5px;
background-color: #FFF;
border: 1px solid #CCC;
box-shadow: 5px 5px 5px #828282;
/*Set the opacity as "50%" */
opacity: .5;
/*Set the transition to change the opacity value 50% to 100% */
transition: opacity 1s linear;
}
/*Internal style for figure tag when mouse over the figure */
figure:hover { opacity: 1; }
/*Internal style for figcaption tag */
figcaption
{
text-align: center;
font-size: .8em;
font-style: italic;
}
/*Internal style for footer tag */
footer
{ font-size:70%;
text-align: center;
padding: 10px;
background-color: #869dc7;
clear: both;
}
/*Internal style for div tag with id of "offer" */
#offer
{
background-color: #eaeaea;
width: 10em;
margin: auto;
text-align: center;
}
/*Internal style for div tag with id of "offer a" */
#offer a
{
text-decoration: none;
color: #FF0000;
}
/*Internal style for header, main, nav, footer, figure, and figcaption tags */
header, main, nav, footer, figure, figcaption { display: block; }
/*Internal style for media queries to set maximum of 1024 size for web page. */
@media only screen and (max-width: 1024px)
{
body { margin: 0; background-color: #869dc7;}
#wrapper { width: auto; margin: 0; }
main { margin-left: 0; }
nav { float: none; width: auto; }
nav li { display: inline-block; padding: 0.5em; }
nav ul { text-align: center; }
nav a { border-style: none; }
h1, h2 { font-size: 120%; }
p { font-size: 90%; }
}
/*Internal style for media queries to set maximum of 768 size for web page. */
@media only screen and (max-width: 768px)
{
#wrapper { min-width: 0; }
header { background-image: url(lighthousemini.jpg); }
header h1 { padding-left: 0; }
h1, h2 { font-size: 100%; }
span { font-size: 80%; }
figure { display: none;}
nav, nav ul, nav li { padding: 0; }
nav li { display: block; }
nav a { display: block; padding: 0.5em 0; border-bottom: 2px ridge #00005D; }
}
<!--close the style tag-->
</style>
<!--Close head tag-->
</head>
<!-- Open the body tag-->
<body>
<!--open the div tag-->
<div id="wrapper">
<!--Open the header tag-->
<header>
<!--Display the h1 heading-->
<h1>Lighthouse Island Bistro</h1>
<!--Display the span tag-->
<span>the best coffee on the coast</span>
<!--Close the header tag-->
</header>
<!--Open the navigation tag-->
<nav>
<!--Open the unordered list tag-->
<ul>
<!--Display the navigation link using "a" tag-->
<li><a href="index.html">Home</a></li>
<li><a href="menu.html">Menu</a></li>
<li><a href="directions.html">Directions</a></li>
<li><a href="contact.html">Contact</a></li>
<!--Close the unordered list tag-->
</ul>
<!--Close the navigation tag-->
</nav>
<!--Open the main tag-->
<main>
<!--Open the figure tag-->
<figure>
<img src="lighthouseisland.jpg" width="250" height="355" alt="Lighthouse Island">
<!--Display the caption using figcaption tag-->
<figcaption>Island Lighthouse, Built in 1870</figcaption>
<!--Close the figure tag-->
</figure>
<!--Display the h2 heading-->
<h2>Locally Roasted Free-Trade Coffee</h2>
<!--Display the content using paragraph tag-->
<p>Indulge in the aroma of freshly ground roast coffee. Specialty drinks are available hot or cold.</p>
<!--Display the h2 heading-->
<h2>Specialty Pastries</h2>
<!--Display the content using paragraph tag-->
<p>Enjoy a selection of our fresh-baked, organic pastries, including fresh-fruit muffins, scones, croissants, and cinnamon rolls.</p>
<!--Display the h2 heading-->
<h2>Lunchtime is Anytime</h2>
<!--Display the content using paragraph tag-->
<p>Savor delicious wraps and sandwiches on hearty, whole-grain breads with locally-grown salad, fruit, and vegetables. </p>
<!--Display the h2 heading-->
<h2>Panoramic View</h2>
<!--Display the content using paragraph tag-->
<p>Take in some scenery! The top of our lighthouse offers a panoramic view of the countryside. Challenge your friends to climb our 100-stair tower.</p>
<!--open the div tag with id name of "offer"-->
<div id="offer">
<a href="#">Special Offer</a>
<!--Close the div tag-->
</div>
<!--Close the main tag-->
</main>
<!--Open the footer tag-->
<footer>Copyright © 2018
<!--Close the footer tag-->
</footer>
<!--Close the div tag-->
</div>
<!--Close the body tag-->
</body>
<!--Close the html tag-->
</html>
Output:
Note: Run the code and display the output web page.
Screenshot of the Webpage
Note: The lighthouse figure is initially at 50% opacity then it slowly changes to 100% when the user places the mouse over the figure area.
Screenshot of the Webpage
Want to see more full solutions like this?
Chapter 11 Solutions
Basics of Web Design: Html5 & Css3
- In the past, encryption and decryption were mostly done by substitution and permutation of letters in a text message. study those classic cryptographic schemes Then, develop an automatic cipher using Javascript The cipher should be able to perform the following tasks: generate keys encrypt a given plaintext message with a key selected from the list of keys generated decrypt a given ciphertext message with a known cipher keyarrow_forwardList reasons why teachers should and shouldn’t be replaced by computers? State your response in a descriptive context. Provide five references from the with internet with your answers.arrow_forwardThe attached picture shows the RTCAPI memory mapped register which has the address 0x180. 1) Program the MCU's registers so that a) SIRC is the clock source b) the clock is divided by 16K c) the clock is enabled d) load is enabledarrow_forward
- What is the ALU result if the 4-bit ALU Control signal is 0100? What happens if the ALU Control signal is 0101?arrow_forwardIn the past, encryption and decryption were mostly done by substitution and permutation of letters in a text message. study those classic cryptographic schemes Then, develop an automatic cipher using a programming language of your choice. The cipher should be able to perform the following tasks: generate keys encrypt a given plaintext message with a key selected from the list of keys generated decrypt a given ciphertext message with a known cipher keyarrow_forwardCase Study Instructions: Offshore Wind Energy in the North Sea For this case study, students will analyze the institutional challenges and social rules surrounding offshore wind energy development in the Dutch North Sea, as explored in the case study from the textbook (pages 44-46). Additional resources in this week’s learning module will provide further perspectives on the impact of wind energy on different stakeholders. Students should refer to the syllabus for specific guidelines regarding length, format, and content requirements. Reflection Questions to Consider: What are the key institutional challenges in implementing offshore wind energy in the North Sea? How do formal and informal social rules shape the use of this shared space? What conflicts arise between different stakeholders (e.g., fishermen, naval transport, military, and wind energy developers)? How can policymakers balance economic, environmental, and social considerations when allocating space for wind energy?…arrow_forward
- Alphabetic Telephone Number TranslatorMany companies use telephone numbers like 555-GET-FOOD so the number is easier for their customers to remember. On a standard telephone, the alphabetic letters are mapped to numbers in the following fashion: A, B, and C = 2 D, E, and F = 3 G, H, and I = 4 J, K, and L = 5 M, N, and O = 6 P, Q, R, and S = 7 T, U, and V = 8 W, X, Y, and Z = 9 Write a program that asks the user to enter a 10-character telephone number in the format XXX-XXX-XXXX. The application should display the telephone number with any alphabetic characters that appeared in the original translated to their numeric equivalent. For example, if the user enters 555-GET-FOOD, the application should display 555-438-3663.arrow_forwardI would like help to resolve the following casearrow_forward7. Character AnalysisIf you have downloaded the source code you will find a file named text.txt in the Chapter 08 folder. Write a program that reads the file’s contents and determines the following: The number of uppercase letters in the file The number of lowercase letters in the file The number of digits in the file The number of whitespace characters in the filearrow_forward
- Provide the full blue terminal commands & output and other things that are usefularrow_forwardHomework You have the row vector (A) that has values from (-100 to 100), write MATLAB codes to: (1) Interchange the first 10 elements with last ten elements. (2) Replace the elements at indices (93,9,17,50) of A with 99. (3) Return the second element and the element before the last of A as a column vector (C1). (4) Extract the first five elements and the last five elements of A and append them as a row vector (R). (5) Set the elements of A with odd indices to zeros(0).arrow_forwardif the error in a closed-loop Servo motor system is zero, why does the motor Contimac ranning instead of stoppingarrow_forward
- Np Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:CengageNew Perspectives on HTML5, CSS3, and JavaScriptComputer ScienceISBN:9781305503922Author:Patrick M. CareyPublisher:Cengage LearningCOMPREHENSIVE MICROSOFT OFFICE 365 EXCEComputer ScienceISBN:9780357392676Author:FREUND, StevenPublisher:CENGAGE L
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,


