Tehnologii Web/2022-2023/Laborator 3

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Introduction[edit | edit source]

This is an assignment-driven laboratory.

  • You are encouraged to continue the work from the previous laboratory.
  • You can use the existing CSS classes and HTML components.
  • You will need a separate HTML file for this task.
  • We are going to implement a responsive grid system (similar to Bootstrap) from scratch.

Task[edit | edit source]

Implement the following web dashboard having responsiveness in your mind.

Approach[edit | edit source]

In general terms, there are 3 viable approaches:

  1. Standard layout (default / stacked, in-line, floats and breakpoints)
  2. Flex layout
  3. Grid layout
  4. Responsive grid based on 12 columns - in this lab

Notes[edit | edit source]

  • Option 1) is still popular, but we can leverage modern browser capabilities.
  • Option 2) would work in this case, but is not necessarily the easiest way for complex page layouts.
  • Option 3) introduced recently would be the best fit, but the browser coverage is not yet 100%, currently at 96% (flexbox for instance has 99.7% browser support).
  • HTML Grid - 12 columns taking full height
    Option 4) is implemented in the most popular frontend frameworks. We will implement our own responsive grid from scratch. We will still use flexbox and media-queries but the effort is significantly lower than option 1).

Tips[edit | edit source]

  • The navbar takes 100% width (12 columns).
  • The left sidebar takes 2-3 columns on desktop and 12 columns on mobile.
  • The main content takes around 8-10 columns on desktop and 12 columns on mobile

Steps[edit | edit source]

Step 1[edit | edit source]

Generally, it is a good practice to set the sizing for all the elements as border-box.

Border-box means, essentially, the width and height values would take account of the element's padding and border.

* {
  box-sizing: border-box;
}

Step 2[edit | edit source]

In your CSS stylesheet add the following classes for the columns.

/* Desktop size */
.col-1 {width: 8.33%;}
.col-2 {width: 16.66%;}
.col-3 {width: 25%;}
.col-4 {width: 33.33%;}
.col-5 {width: 41.66%;}
.col-6 {width: 50%;}
.col-7 {width: 58.33%;}
.col-8 {width: 66.66%;}
.col-9 {width: 75%;}
.col-10 {width: 83.33%;}
.col-11 {width: 91.66%;}
.col-12 {width: 100%;}

Step 3[edit | edit source]

When the browser width is less than 768px, we will trigger our mobile view, then, our columns will take the entire width.

Assignment: Web Dashboard - desktop view
Lab assignment - mobile view
@media only screen and (max-width: 768px) {
  /* For mobile phones: */
  [class*="col-"] {
    width: 100%;
  }
}

Step 4[edit | edit source]

Our content will be displayed under several rows. We want to clear the rest of the content in the row container. Also, adding some padding for our columns is also a popular practice.

.row::after {
  content: "";
  clear: both;
  display: block;
}

[class*="col-"] {
  float: left;
  padding: 15px;
}

Step 5[edit | edit source]

Your HTML body could look like this.

<body>

    <div class="navbar">
      <h1>Your Web App</h1>
    </div>

    <div class="row">
      <div class="col-3 side-menu">
        <ul>
            <li>Home</li>
            <li>Profile</li>
            <li>About</li>
            <li>FAQ</li>
            <li>Contact</li>
        </ul>
      </div>
    
      <div class="col-9">
        <h1>Dashboard</h1>
        <p>Welcome to the dashboard of your application.</p>
        <p>Resize your browser to test your responsiveness!</p>
      </div>
    </div>
</body>

Your task: complete the HTML and CSS files in order to match the desktop and the mobile view.

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