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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

!
Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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Packages

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Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

All packages are different, so refer to their docs for how they work.

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HTML 

              
                
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
  <body onload="startTime(); startDate()">
    <div class="container">
      <div id="date"></div>
      <div id="display"></div>
      <div id="content">
        <p id="quote">"the people who are crazy enough to think they can change the world are the ones who do." <br/>- Steve Jobs</p>
      </div>
    </div>
    <div id="b-nav">
      <ul>
        <button id="gen" onclick="genQuote()">New Quote</button>
        <a class="twitter-share-button" target="_blank" href="https://twitter.com/intent/tweet?text=the%20people%20who%20are%20crazy%20enough%20to%20think%20they%20can%20change%20the%20world%20are%20the%20ones%20who%20do.%20-%20Steve%20Jobs"><i class="fa fa-twitter" aria-hidden="true"></i></a>
      </ul>
    </div>
!

CSS 

              
                html, body {
  overflow-x: hidden;
  overflow-y: hidden; 
  height: 100%;
  width: 100%;
  position: absolute;
  background-color: black;
  background-image: url('https://wallpapercave.com/wp/5KLTq1z.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: top;
  z-index: -2;
}

#display {
	color: white;
	font-size: 2.9em;
	top: 10px;
  border-bottom: thin solid;
  padding-bottom: 20px;
  opacity: 0.80;
  filter: alpha(opacity=80); /* For IE8 and earlier */
}

#date {
  color: white;
  font-size: 1.3em;
  font-family: Georgia, "Times New Roman", Times, serif;
  font-weight: normal;
  letter-spacing: 0.2em;
  opacity: 0.6;
  filter: alpha(opacity=60); /* For IE8 and earlier */
}

#footer {
  width: 100%;
  height: 40px;
  position: fixed;
  bottom: -1px;
  background-color: white;
  text-align: center;
  opacity: 0.5;
  filter: alpha(opacity=50); /* For IE8 and earlier */
}

#line {
  width: 100%;
  bottom: 4em;
  position: fixed;
  border-bottom: solid white;
  padding: 15px;
  opacity: 0.5;
  filter: alpha(opacity=50); /* For IE8 and earlier */
}

.navbar {
  position: fixed;
  width: 100%;
  opacity: 0.6;
  filter: alpha(opacity=60); /* For IE8 and earlier */
}

.wrapper {
  background-color: red;
}

span {
  border-radius: 100px;
  opacity: 0.75;
  filter: alpha(opacity=75); /* For IE8 and earlier */
}

#content {
  height: 45em;
} p {
  max-width: 30em;
  color: white;
  font-family: "Adobe Caslon Pro", "Hoefler Text", Georgia, Garamond, Times, serif;
  letter-spacing:0.1em;
  text-align:center;
  margin: 40px auto;
  text-transform: lowercase;
  line-height: 145%;
  font-size: 2em;
  font-variant: small-caps;
}

p :hover {
  text-decoration: none;
}

.container {
  padding-top: 6em;
  text-align: center;
}

#b-nav {
  padding-bottom: 5em;
  position: fixed;
  width: 100%;
  bottom: 2em;
}

#b-nav ul {
  margin: 0;
  padding: 0.5em;
  list-style-type: none;
  text-align: center;
}

#b-nav ul li {
  display: inline;
}

#b-nav ul li a {
  text-decoration: none;
  padding: .2em 1em;
  background-color: black;
  opacity: 0.4;
  filter: alpha(opacity=40); /* For IE8 and earlier */
}

.hold {
  width: 100%;
  text-align: left;
}

#gen {
  outline: none;
  padding-top: 5px;
  text-decoration: none;
  opacity: 0.6;
  background-color: black;
  color: white;
  border: thin solid white;
  height: 40px;
  width: 100px;
  border-radius: 2px;
  transition: 0.5s;
  padding-bottom: 5px;
}

#gen:hover {
  background-color: white;
  color: black;
  border: thin solid black;
  opacity: 0.8;
}

#gen a {
  text-decoration: none;
}

#date {
  color: white;
}

@media screen 
 and (max-device-width: 800px) 
  and (max-device-height: 640px) 
  and (-webkit-device-pixel-ratio: 2) 
  and (orientation: portrait) {
    p {
      font-size: 1em;
    }
}

.fa-twitter {
  font-size: 30px !important;
  margin-left: 20px;
}
!

JS 

              
                function startTime() {
    var today=new Date();
    var h=today.getHours();
    var m=today.getMinutes();
    var s=today.getSeconds();
    var ampm = "";
    m = checkTime(m);

    if (h > 12) {
    	h = h - 12;
    	ampm = " PM";
    } else if (h == 12){
        h = 12;
    	ampm = " AM";
    } else if (h < 12){
        ampm = " AM";
    } else {
        ampm = "PM";
    };
  
  if(h==0) {
    h=12;
  }
    
    document.getElementById('display').innerHTML = h+":"+m+ampm;
    var t = setTimeout(function(){startTime()},500);
}

function checkTime(i) {
    if (i<10) {i = "0" + i};  // add zero in front of numbers < 10
    return i;
}

function genQuote() {
  var randNum = Math.floor(Math.random() * 8) + 1;
  document.getElementById('quote').innerHTML = quotes[randNum];
  var tweetQuote = quotes[randNum].split(' ').join('%20');
  tweetQuote = tweetQuote.split('<br>').join('');
  tweetQuote = "https://twitter.com/intent/tweet?text=" + tweetQuote.split('"').join('')
  $('.twitter-share-button').attr('href', tweetQuote);
}

//quote array
var quotes = ["Blank", "\"Dude, suckin' at something is the first step at being sorta good at something.\"<br>-  Jake <small><em>(Adventure Time)</em></small>", "\"Either I will find a way, or I will make one.\"<br> - Philip Sidney", "\"Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.\"<br>- Thomas A. Edison", "\"You are never too old to set another goal or to dream a new dream.\"<br>- C.S Lewis", "\"If you can dream it, you can do it.\"<br>- Walt Disney", "\"Never give up, for that is just the place and time that the tide will turn.\"<br>- Harriet Beecher Stowe", "\"I know where I'm going and I know the truth, and I don't have to be what you want me to be. I'm free to be what I want.\"<br>- Muhammad Ali", "\"If you always put limit on everything you do, physical or anything else. It will spread into your work and into your life. There are no limits. There are only plateaus, and you must not stay there, you must go beyond them.\"<br>- Bruce Lee",];

//date
function startDate() {
  var d = new Date();
  var days = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
  document.getElementById("date").innerHTML = days[d.getDay()]+" | "+[d.getMonth()+1]+"/"+d.getDate()+"/"+d.getFullYear();
}
!
999px

Console