Are you looking for good knowledge on CSS3? Do you want to become a CSS3 developer? If yes, then this CSS3 developer interview questions and answers 2023 blog will help you as a fresher and experienced both.
Web page designing is a creative task, and if the right technology is used, it becomes effortless work for developers. Developers need to keep updating their technical skill set. They can easily learn the most demanding technology, CSS3, which supports all the latest browsers. It's a level 3 version of CSS. The full form of CSS is Cascading Style Sheets.
Before going to study the latest questions and answers, let's know some facts about CSS3:
We are sure that our CSS3 interview questions can help you in cracking the interview and bagging your dream job with the highest payout.
We have categorized CSS3 Interview Questions - 2024 (Updated) into 3 stages:
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CSS3 has the elements as syntax rules; they are
CSS3 element selector helps to find out the HTML elements name which we want to apply in a style sheet. It has five categories. They are
Example:
P {
text-align: left;
Color: blue
In the output element P will be left aligned with the Blue text color.
Mostly we customize the design by using media. We need media control to make the external style sheet. Through the network, we can also retrieve and load in CSS3. List of media:
Physical tags can be used to mark up presentations or appearances. Logical tags can not be used for markup, presentation, or appearances.
The latest tag version is a physical tag type. The logical tag type is an older version of the tag.
Physical tag is concentrated on all media. Logical tags concentrated on HTML content only.
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Yes, they are different. Because style sheets provide more styling, HTML provides less. If we use style sheets then we can get better formatting options and maximum browser compatibility.
One selector can be added to another selector by using the ruleset. It has two steps:
CSS3 is not case sensitive, even also not dependent on font styles, or images on a website. But, if we do use XML then DOCTYPE will be XHTML, in that case, CSS3 will be case sensitive.
The declaration block is actually a bundle of consisting property, colon, and value within braces. Like [property 2: value 5]
The various font attributes are
Yes, we can insert the file. Actually importing activates the combining sheets to be attached to other sheets. Here we can use different files and sheets for a few functions. So we can use this given syntax:
@import notation, used with <Style> tag.
This class selector is always unique to a particular style. It helps to manage the style declaration and association with HTML. Try this syntax:
classname
It can be A or any letter or digit.)
.botton {font: 16em;}, class selector
<Body class="bottom">
this class is tagged with element </body>
See in CSS3 Pseudo-elements are used by some selectors to add some special effects like styles in HTML normal markup level. But in some special cases, we can not add any document. In those cases, we can also use Pseudo-elements. Because it helps to mark up the document without distributing it.
Yes, we can overrule underlining hyperlinks.
B {
Text-decoration:none:
}
<b href="career.html" style="text-decoration: none">link text </B>
Yes, we can use it. When we declare the float then 1 pixel will be added every time. It can be added more to the border of the form with more floats.
Sorry, we can revert the back value in CSS3. Because there are fewer default values. But we can re-declare the property to take out the default property.
Actually, this box model contains the design and the element layout of CSS3. It has a few elements. Like:
Contextual selectors are applied to special occurrences of a particular element. Here one space separates the different elements. The last element will be counted as a contextual selector like tdptextcolor {color: orange}.
Hexadecimal color code uses a set of 6 characters and numbers. Whereas RGB uses 3 sets of 3 numbers with a range of 0-255.
We can group the selector with the same values of property and the development code will be reduced. Now if they are having the same property then we can use commas to avoid rewriting.
Example:
h1 {
color: pink;
}
h2 {
color: pink;
}
p {
color: pink;
}
Suppose, we want to specify a selector inside of a selector, then we have to use nesting in CSS3.
Example:
p
{
color: black;
text-align: right;
}
.marked
{
background-color: white;
}
.marked p
{
color: orange;
}
The overall block is called a class selector, but a single element that is different from others elements is called an id selector.
Example of class selector:
<style>
.center {
text-align: center;
color:red;
}
</style>
Example of id selector:
<style>
#para1
{
text-align: centre;
color:red;
}
</style>
They are different in properties in the case of the former, the element is deleted, the element is hidden or no space is consumed.
We can wrap the text and position it on the left or right without changing the element's property. If we need to move the images on web pages then we have to use the float property. We can move the right of the image to the left or left to right along with the attached text.
Actually, this CSS3 counter is a variable. We can increase this variable value by using CSS3 inspect, even if we can find the number of times we have used the variable.
When we want to declare the initial position of a particular background image, we have to do it through the background-position property. By default, the position is top left of the page. We can set the position as per our requirement, like right or corner or center, etc.
Example:
<html>
<head>
<style>
body {
background-image: url('mindmajix.gif');
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center;
}
<p> CSS Background Position: Mindmajix.io</p>
</body>
</html>
Actually, the background repetition property controls this backup process. If we are not repeating the image then we have to use no-repeat.
Example:
<html>
<head>
<style>
body {
background-image: url("/css/images/css.jpg");
background-repeat: no-repeat;
}
</style>
</head>
<body>
<p> CSS Background Position: Mindmajix.io</p>
</body>
Opacity means a certain degree that is applicable to light that passes through the objects in the pages. Actually, in CSS3 we control the transparency of any HTML elements by using opacity. It makes the images clear and visible. We can control opacity in two ways.
First: We can declare it by @media or @import at-rules of specific target medium:
@import url("fancyfonts.css") screen;
@media print {
/*style sheet for print goes here*/
}
Second: Within the HTML4 document, we can declare the media attribute.
<!DOCTYPE HTML PUBLIC"-//W3C//DTD HTML 4.01//EN">
</HTML?
<HEAD>
<TITLE>Link to a target medium</TITLE>
<LINK REL="stylesheet" TYPE="text/css"
MEDIA="print,handheld" HREF="foo.css">
</HEAD>
<BODY>
<P>The body...
</BODY>
</HTML>
We can define the element dimension by the given properties:
If we are overlapping the elements vertically then we must use a z-index. It provides the vertical stack order of the elements. The default value we need to take is 0 in positive or negative. Also, we can the given values for z-index:
Let's see in the given below image:
It's a flexible box in CSS, also available in CSS3. It provides proper orientation of elements in web pages, easy layout handling, and space distribution within elements in a responsive website. We can also handle the dimensions of elements by using the flexbox property. It has a few properties. They are
We can outline and fix the behavior of the HTML webpage by CSS. It helps to represent the HTML content on-screen by separating them from the presentation to take control of the website easier. Mostly the third version of CSS, that is CSS3 helps create the style and web page format. It has some advanced features from CSS2.
The latest CSS3 modules are :
It also has other informative modules:
CSS2 | CSS3 |
CSS2 comprises one module onl | CSS3 has many modules |
CSS2 is difficult to handle | CSS3 is easier to handle |
No specific fonts like Google fonts or Typecast are available in CSS2 | In CSS3 special fonts like Google fonts and Typecast is available |
Graphics-related features are not available in CSS2. | Graphics-related features are not available in CSS3. |
Mainly, CSS is used to create the style in web pages that have HTML content. There are three types of CSS. They are
External style CSS has different CSS files. These files have only the style property for the tag attributes like class, id, etc. It creates a separate file with a .css extension which we have like with HTML content by using a link tag. Only one time do we need to set the style which will be applied over web pages.
Example of external style sheet: mindmajix.css
body {
background-color:powderblue;
}
.main {
text-align:left;
}
.GFG {
color:#009900;
font-size:50px;
font-weight:bold;
}
#mindmajix {
font-style:bold;
font-size:25px;
}
This internal style sheet is used in HTML content uniquely. We have to keep it within the HTML file head section.
Example of internal style sheet:
<!DOCTYPE html>
<html>
<head>
<title>Internal CSS</title>
<style>
.main {
text-align:center;
}
.GFG {
color:#009900;
font-size:30px;
font-weight:bold;
}
.mindmajix {
font-style:bold;
font-size:10px;
}
</style>
</head>
<body>
<div class="main">
<div class="MDM">Mindmajix</div>
<dic class="Mindmajix">
IT E-learning Portal.
</div>
</div>
</body>
</html>
CSS image scripts can combine multiple images into a single image file, which we can use on web pages to increase performance better.
Nowadays we use different electronic devices to access any website. So the screen size will be different as per the device. This responsive design helps the website to fit itself automatically accordingly to the screen size. It has flexible grids, layouts, images, and intelligent CSS3 media queries. The responsive feature first checks the screen size of the device and accordingly adjusts it to fit the screen without creating different layouts.
Yes, CSS3 is required in a responsive website. Because it makes for easier loading. It makes the website lucrative. Responsive websites use CSS3 and HTML both to load the site faster and fit on all devices' screens in a single layout.
There are a few CSS3 frameworks, they are:
We hope you have liked our CSS3 Interview Question and Answers blog. It has a high probability of coming in for interviews. This CSS3 blog was a comprehensive list of frequently asked questions and answers in interviews. All the best for your interview.
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Madhuri is a Senior Content Creator at MindMajix. She has written about a range of different topics on various technologies, which include, Splunk, Tensorflow, Selenium, and CEH. She spends most of her time researching on technology, and startups. Connect with her via LinkedIn and Twitter .