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
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