CSS: Block height and width

When you create pages, you often want to control the height and width of blocks. This is useful in long articles when you want to put explanatory text in a small block. This way it will be separated from the main part of the text, and you can see it immediately.

The rules width and height are used to control the height and width of block elements, taking values for width and height respectively (in pixels or other available units of measure, for example).

Let's create a block 100 pixels high and 100 pixels wide. To visually separate it from the theory in the tutorial, set the background color to black:

<style>
  .square {
    width: 100px;
    height: 100px;
    background-color: #000;
  }
</style>

<div class="square"></div>

Instructions

Add <div> to the editor with the class set to rectangle. Set the properties:

Width: 300px
Height: 100px
Background color: #000.

Write the styles in the <style> tag

languages.lessons.show.profession_description

The exercise doesn't pass checking. What to do? 😶

If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:

Be sure to attach the test output, without it it's almost impossible to figure out what went wrong, even if you show your code. It's complicated for developers to execute code in their heads, but having a mistake before their eyes most probably will be helpful.

In my environment the code works, but not here 🤨

Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.

My code is different from the teacher's one 🤔

It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.

In some rare cases, the solution may be adjusted to the tests, but this can be seen immediately.

I've read the lessons but nothing is clear 🙄

It's hard to make educational materials that will suit everyone. We do our best but there is always something to improve. If you see a material that is not clear to you, describe the problem in “Discussions”. It will be great if you'll write unclear points in the question form. Usually, we need a few days for corrections.

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Your exercise will be checked with these tests:

1const { test } = require('tests');
2
3test(({ query, expect }) => {
4  const element = query(document, '.rectangle');
5
6  const style = getComputedStyle(element);
7  expect(style).to.have.property('width', '300px');
8  expect(style).to.have.property('height', '100px');
9  expect(style).to.have.property('background-color', 'rgb(0, 0, 0)');
10});
11

Teacher's solution will be available in:

20:00

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