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HTML

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About the <head>

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <!DOCTYPE html>
<html>
  <head>
    <title>Hani Mansour</title>
    <meta charset="UTF-8" />
    <base target="_blank"/>
    <meta name="author" content="Hani Mansour">
    <meta name="Description" content="You can find us by typing @hani2up"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
   </head>
   <body>
     <h5>Assignment 1</h5>
     <!-- Assignment 1 -->
     <div class="parent">
       <div class="child-1">Full Width</div>
       <div class="child-3">1/3</div>
       <div class="child-3">1/3</div>
       <div class="child-3">1/3</div>
       <div class="child-2">1/2</div>
       <div class="child-2">1/2</div>
       <div class="child-4">1/4</div>
       <div class="child-4">1/4</div>
       <div class="child-4">1/4</div>
       <div class="child-4">1/4</div>
       <p></p>
     </div>
     <hr>
     <h5>Assignment 2</h5>
     <!-- Assignment 2 -->
     <div class="assign-2">
       <div class="normal">Normal</div>
       <div class="one">One</div>
       <div class="two">Two</div>
     </div>
   </body>
</html>
!

CSS 

              
                /* Assignment 1 */

.parent {
  font-family: Arial, Helvetica, sans-serif;
  font-weight: bold;
  width: 800px;
  margin: 50px auto;
  background-color: #eee;
}

.parent div {
  text-align: center;
  background-color: #ddd;
  padding: 20px 0;
  margin-top: 15px;
  margin-left: 15px;
  float: left;
}

p {
  clear: both;
}

.child-1 {
  width: calc(100% - 30px);
} 

.child-3 {
  width: calc((100% - 60px) / 3);
} 

.child-2 {
  width: calc((100% - 45px) / 2);
} 

.child-4 {
  width: calc((100% - 75px) / 4);
  margin-bottom: 15px;
}





/* Assignment 2 */

/* 
NOTE!
I forced to add a div and class like <div class="assign-2"> to distinguish between the assignment elements in one page.
==> you can't write it.
*/

.assign-2 div {
  margin: 20px auto;
  width: 300px;
  font-weight: bold;
  font-size: 1rem;
  padding: 20px;
  background-color: rgb(179, 179, 179); /* Get The Background From Image */
  color: black;
}

.assign-2 .one {
  background-color: rgb(179, 179, 179, 0.1);
}

.assign-2 .two {
  opacity: 0.1;
}







































































/* ----- */
hr {
  margin: 80px 0;
}
h5 {
  margin: 0 0 40px;
}
!

JS
!
999px

Console