Test your skills: Values and units

The aim of this skill test is to help you assess whether you understand different types of values and units used in CSS properties.

Note: To get help, read our Test your skills usage guide. You can also reach out to us using one of our communication channels.

Values and units 1

In this task, the first list item has been given a background color using a hex color code. Complete the CSS using the same color in different formats, plus a final list item where you should make the background semi-opaque.

The second list item should use RGB color.
The third should use HSL color.
The fourth should use RGB color but with the alpha channel set to 0.6.

You can convert the hex color using convertingcolors.com. You need to figure out how to use the values in CSS.

The starting point of the task looks like this:

Here's the underlying code for this starting point:

html

<ul>
  <li class="hex">hex color</li>
  <li class="rgb">RGB color</li>
  <li class="hsl">HSL color</li>
  <li class="transparency">Alpha value 0.6</li>
</ul>

css

body {
  font: 1.2em / 1.5 sans-serif;
}
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

li {
  margin: 1em;
  padding: 0.5em;
}

.hex {
  background-color: #86defa;
}

/* Add styles here */

The updated styling should look like this:

Click here to show the solution

By using a color conversion tool, you should be equipped to use different color functions to define the same color in different ways:

css

.rgb {
  background-color: rgb(134 222 250);
}

.hsl {
  background-color: hsl(194 92% 75%);
}

.transparency {
  background-color: rgb(134 222 250 / 60%);
}

Values and units 2

In this task, we want you to set the font size of various items of text:

The <h1> element should be 50px.
The <h2> element should be 2em.
All <p> elements should be 16px.
A <p> element that is directly after an <h1> should be 120%.

The starting point of the task looks like this:

Here's the underlying code for this starting point:

html

<h1>Level 1 heading</h1>
<p>
  Veggies es bonus vobis, proinde vos postulo essum magis kohlrabi welsh onion
  daikon amaranth tatsoi tomatillo melon azuki bean garlic.
</p>
<h2>Level 2 heading</h2>
<p>
  Gumbo beet greens corn soko endive gumbo gourd. Parsley shallot courgette
  tatsoi pea sprouts fava bean collard greens dandelion okra wakame tomato.
  Dandelion cucumber earthnut pea peanut soko zucchini.
</p>

css

body {
  font: 1.2em / 1.5 sans-serif;
}

h1 {
  /* Add styles here */
}

h2 {
  /* Add styles here */
}

p {
  /* Add styles here */
}

h1 + p {
  /* Add styles here */
}

The updated styling should look like this:

Click here to show the solution

You can use the following length values:

css

h1 {
  font-size: 50px;
}

h2 {
  font-size: 2em;
}

p {
  font-size: 16px;
}

h1 + p {
  font-size: 120%;
}

Values and units 3

To complete the task, update the CSS to move the background image so that it is centered horizontally and is 20% from the top of the box.

The starting point of the task looks like this:

Here's the underlying code for this starting point:

html

<div class="box"></div>

css

.box {
  border: 5px solid black;
  height: 350px;
}

.box {
  background-image: url("https://mdn.github.io/shared-assets/images/examples/purple-star.png");
  background-repeat: no-repeat;
}

The updated styling should look like this:

Click here to show the solution

Use background-position with the center keyword and a percentage:

css

.box {
  background-image: url("https://mdn.github.io/shared-assets/images/examples/purple-star.png");
  background-repeat: no-repeat;
  background-position: center 20%;
}