The ultimate guide to CSS interviews, developed by FAANG engineers. Prep faster and get interview-ready in hours with battle-tested, real-world questions and a structured approach to styling and advanced concepts.

In front-end interviews there’s a lot to cover. You have to study up on JavaScript, HTML, and then there’s CSS, and that’s the focus of this course.

This course compiles a comprehensive range of questions that you are most likely to be tested on during front-end interviews. This is an intermediate course with more than 250 coding challenges and multiple choice questions, so there’s plenty of opportunities to get your hands dirty.

You will start by going through several self-assessment exams to get an idea of what you’ll need to study up on. From there, you’ll go into interview questions on styling such as text, colors, backgrounds, and display.

In the latter half of the course, you’ll focus on advanced concepts like Flexbox, block formatting, and working with SVG. In all, this course serves as a stand-alone guide for those who are starting to prepare for front-end interviews.

By the end of this course, you will have gained the confidence to go in and answer any question.

CSS for Front-end Interviews

# Solution review

Let’s have a look at the solution first.



* {
  margin:0;
}

.box {
  width: 100%;
  height: 100px; 
  position: fixed;
}

.box1 { 
  background: coral;
  top: 0;
  left: 0;
}

.box2 {
  background: steelblue;
  top: 100px;
  color: white;
}

#center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

<html>
 <head>
 </head>
 <body>
  <div class="box box1">
    <p id="center">Align the text in the center of the page.</p>
    </div>
  <div class="box box2">
    <p id="center">Text should be align in the center of the page.</p>
    </div>
 </body>
</html>





















// Async Tests Example
/*
window.onModulesLoaded = new Promise( function( resolve, reject ) {
  setTimeout(function() {
    pTag = document.querySelector("div");
    pTag.innerHTML = '';
    newVal = document.createElement("p");
    newVal.innerHTML = 'Hello World';
    pTag.appendChild(newVal);
    resolve();
  }, 100)
});
*/

codemirror

## Explanation

```css
* {
  margin: 0;
}
```

The `margin` for all the elements by default is set to `0`. 

```css
.box {
  width: 100%;
  height: 100px; 
  position: fixed;
}
```

The `height` and `width` of the boxes are set to `100px` and `100%`. The `position` is `fixed` to start from a specific location on a page.

```css
.box1 { 
  background: coral;
  top: 0;
  left: 0;
}
```

The background color of `box1` is set to `coral`. The box is positioned at the top left corner as the values are set to `0`.

```css
.box2 {
  background: steelblue;
  top: 100px;
  color: white;
}
```

The background color of `box2` is set to `steelblue`. The box is positioned at `100px` away from the top as the value is set to `100px`. We positioned `box2` `100` pixels away from the `top` to avoid overlapping between `box1` and `box2`. The text color of `box2` is set to `white`. 


```css
#center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
```

The position is set to `absolute` to place the elements relative to the position of the parent element (`div`). The content is shifted downwards to `50%` to position the elements in the center vertically. The content is shifted leftwards to `50%` to position the elements in the center horizontally. To reinforce the objects must appear in the center, we've used `translate(-50%, -50%)` to display content in the center. 

The solution to the challenge of aligning the elements in the center (both vertically and horizontally) is discussed in this lesson.

Introduction

Basic Styling

Intermediate Styling

Advance Styling

Advance Concepts

Responsive Design

Wrapping Up

Solution Review: CSS Transform Challenge 2

Solution review

Explanation