Compare Grouping and Nesting in CSS ?
Grouping: Selectors can be grouped having the same values of property and the code be reduced.
E.g. :
h1 {
color: blue;
}
h2 {
color: blue;
}
p {
color: blue;
}
h1 {
color: blue;
}
h2 {
color: blue;
}
p {
color: blue;
}
It can be seen from the code that every element shares the same property. Rewriting can be avoided by writing each selector separated by a comma.
Nesting: Specifying a selector within a selector is called nesting.
P
{
color: red;
text-align: left;
}
.marked
{
background-color: blue;
}
.marked p
{
color: green;
}
25
P
{
color: red;
text-align: left;
}
.marked
{
background-color: blue;
}
.marked p
{
color: green;
}
How can the dimension be defined of an element ?
Dimension properties can be defined by:
Height
Max-height
Max-width
Min-height
Min-width
Width
Define float property of CSS?
By float property, the image can be moved to the right or the left along with the text to be wrapped around it. Elements before this property is applied do not change their properties.
How does Z index function?
Overlapping may occur while using CSS for positioning HTML elements. Z index helps in specifying the overlapping element. It is a number which can be positive or negative, the default value being zero.
Define Attribute Selector ?
It is defined by a set of elements, value and its parts.
What Is A Child Selector?
Consider the following example
body > p
{
color: #000000;
}
This rule will render all the paragraphs in black if they are direct child ofelement. Other paragraphs put inside other elements like or would not have any effect of this rule.
What Is An Attribute Selector?
You can also apply styles to HTML elements with particular attributes. The style rule below will match all the input elements having a type attribute with a value of text
input[type = "text"]
{
color: #000000;
}
The advantage to this method is that the element is unaffected, and the color applied only to the desired text fields.
How To Select All Paragraph Elements With A Lang Attribute?
p[lang] : Selects all paragraph elements with a lang attribute.
How To Select All Paragraph Elements Whose Lang Attribute Has A Value Of Exactly "fr"?
p[lang="fr"] - Selects all paragraph elements whose lang attribute has a value of exactly "fr".
How To Select All Paragraph Elements Whose Lang Attribute Contains The Word "fr"?
p[lang~="fr"] - Selects all paragraph elements whose lang attribute contains the word "fr".
How To Select All Paragraph Elements Whose Lang Attribute Contains Values That Are Exactly "en", Or Begin With "en-"?
p[lang|="en"] - Selects all paragraph elements whose lang attribute contains values that are exactly "en", or begin with "en-".
What Are The Various Ways Of Using Css In An Html Page?
There are four ways to associate styles with your HTML document. Most commonly used methods are inline CSS and External CSS.
Embedded CSS − The
Which Property Is Used To Add Or Subtract Space Between The Letters That Make Up A Word?
The letter-spacing property is used to add or subtract space between the letters that make up a word.
Which Property Is Used To Add Or Subtract Space Between The Words Of A Sentence?
The word-spacing property is used to add or subtract space between the words of a sentence.
What Are The Components Of A Css Style?
A style rule is made of three parts −
Selector − A selector is an HTML tag at which a style will be applied. This could be any tag like <h1> or <table> etc.
Property − A property is a type of attribute of HTML tag. Put simply, all the HTML attributes are converted into CSS properties. They could be color, border etc.
Value − Values are assigned to properties. For example, color property can have value either red or #F1F1F1 etc.
What Is Type Selector?
Type selector quite simply matches the name of an element type. To give a color to all level 1 headings −
h1 {
color: #36CFFF;
}
Which Property Is Used To Set The Opacity Of An Image?
The -moz-opacity property is used to set the opacity of an image.
Which Property Of A Hyperlink Signifies Unvisited Hyperlinks?
The :link signifies unvisited hyperlinks.
Which Property Of A Hyperlink Signifies Visited Hyperlinks?
The :visited signifies visited hyperlinks.
Which Property Of A Hyperlink Signifies An Element That Currently Has The User's Mouse Pointer Hovering Over It?
The :hover signifies an element that currently has the user's mouse pointer hovering over it.
What Is Universal Selector?
Rather than selecting elements of a specific type, the universal selector quite simply matches the name of any element type
* {
color: #000000;
}
This rule renders the content of every element in our document in black.
What Is Descendant Selector?
Suppose you want to apply a style rule to a particular element only when it lies inside a particular element. As given in the following example, style rule will apply to <em> element only when it lies inside <ul> tag.
ul em {
color: #000000;
}
What Is Class Selector?
You can define style rules based on the class attribute of the elements. All the elements having that class will be formatted according to the defined rule.
.black {
color: #000000;
}
This rule renders the content in black for every element with class attribute set to black in our document.
Can You Make A Class Selector Particular To An Element Type?
You can make it a bit more particular. For example
h1.black
{
color: #000000;
}
This rule renders the content in black for only elements with class attribute set to black.
What Is Id Selector?
You can define style rules based on the id attribute of the elements. All the elements having that id will be formatted according to the defined rule.
#black {
color: #000000;
}
This rule renders the content in black for every element with id attribute set to black in our document.
Can You Make A Id Selector Particular To An Element Type?
can make it a bit more particular. For example
h1#black
{
color: #000000;
}
This rule renders the content in black for only elements with id attribute set to black.
What Is The Purpose Of In Measurement Unit?
in − Defines a measurement in inches.
p {word-spacing: .15in;}
What Is The Purpose Of Mm Measurement Unit?
mm − Defines a measurement in millimeters.
p {word-spacing: 15mm;}
What Is The Purpose Of Pc Measurement Unit?
pc − Defines a measurement in picas. A pica is equivalent to 12 points; thus, there are 6 picas per inch.
p {font-size: 20pc;}
What Is The Purpose Of Pt Measurement Unit?
pt − Defines a measurement in points. A point is defined as 1/72nd of an inch.
body {font-size: 18pt;}
What Is The Purpose Of Px Measurement Unit?
px − Defines a measurement in screen pixels.
p {padding: 25px;}
What Is The Purpose Of Vh Measurement Unit?
vh − 1% of viewport height.
h2 { font-size: 3.0vh; }
What Is The Purpose Of Vw Measurement Unit?
vw − 1% of viewport width.
h1 { font-size: 5.9vw; }
Grouping: Selectors can be grouped having the same values of property and the code be reduced.
E.g. :
h1 {
color: blue;
}
h2 {
color: blue;
}
p {
color: blue;
}
h1 {
color: blue;
}
h2 {
color: blue;
}
p {
color: blue;
}
It can be seen from the code that every element shares the same property. Rewriting can be avoided by writing each selector separated by a comma.
Nesting: Specifying a selector within a selector is called nesting.
P
{
color: red;
text-align: left;
}
.marked
{
background-color: blue;
}
.marked p
{
color: green;
}
25
P
{
color: red;
text-align: left;
}
.marked
{
background-color: blue;
}
.marked p
{
color: green;
}
How can the dimension be defined of an element ?
Dimension properties can be defined by:
Height
Max-height
Max-width
Min-height
Min-width
Width
 |
| Cognizant Frequently Asked CSS Interview Questions Answers |
Define float property of CSS?
By float property, the image can be moved to the right or the left along with the text to be wrapped around it. Elements before this property is applied do not change their properties.
How does Z index function?
Overlapping may occur while using CSS for positioning HTML elements. Z index helps in specifying the overlapping element. It is a number which can be positive or negative, the default value being zero.
It is defined by a set of elements, value and its parts.
What Is A Child Selector?
Consider the following example
body > p
{
color: #000000;
}
This rule will render all the paragraphs in black if they are direct child ofelement. Other paragraphs put inside other elements like or would not have any effect of this rule.
What Is An Attribute Selector?
You can also apply styles to HTML elements with particular attributes. The style rule below will match all the input elements having a type attribute with a value of text
input[type = "text"]
{
color: #000000;
}
The advantage to this method is that the element is unaffected, and the color applied only to the desired text fields.
How To Select All Paragraph Elements With A Lang Attribute?
p[lang] : Selects all paragraph elements with a lang attribute.
How To Select All Paragraph Elements Whose Lang Attribute Has A Value Of Exactly "fr"?
p[lang="fr"] - Selects all paragraph elements whose lang attribute has a value of exactly "fr".
How To Select All Paragraph Elements Whose Lang Attribute Contains The Word "fr"?
p[lang~="fr"] - Selects all paragraph elements whose lang attribute contains the word "fr".
How To Select All Paragraph Elements Whose Lang Attribute Contains Values That Are Exactly "en", Or Begin With "en-"?
p[lang|="en"] - Selects all paragraph elements whose lang attribute contains values that are exactly "en", or begin with "en-".
What Are The Various Ways Of Using Css In An Html Page?
There are four ways to associate styles with your HTML document. Most commonly used methods are inline CSS and External CSS.
Embedded CSS − The
Which Property Is Used To Add Or Subtract Space Between The Letters That Make Up A Word?
The letter-spacing property is used to add or subtract space between the letters that make up a word.
Which Property Is Used To Add Or Subtract Space Between The Words Of A Sentence?
The word-spacing property is used to add or subtract space between the words of a sentence.
What Are The Components Of A Css Style?
A style rule is made of three parts −
Selector − A selector is an HTML tag at which a style will be applied. This could be any tag like <h1> or <table> etc.
Property − A property is a type of attribute of HTML tag. Put simply, all the HTML attributes are converted into CSS properties. They could be color, border etc.
Value − Values are assigned to properties. For example, color property can have value either red or #F1F1F1 etc.
What Is Type Selector?
Type selector quite simply matches the name of an element type. To give a color to all level 1 headings −
h1 {
color: #36CFFF;
}
Which Property Is Used To Set The Opacity Of An Image?
The -moz-opacity property is used to set the opacity of an image.
Which Property Of A Hyperlink Signifies Unvisited Hyperlinks?
The :link signifies unvisited hyperlinks.
Which Property Of A Hyperlink Signifies Visited Hyperlinks?
The :visited signifies visited hyperlinks.
Which Property Of A Hyperlink Signifies An Element That Currently Has The User's Mouse Pointer Hovering Over It?
The :hover signifies an element that currently has the user's mouse pointer hovering over it.
What Is Universal Selector?
Rather than selecting elements of a specific type, the universal selector quite simply matches the name of any element type
* {
color: #000000;
}
This rule renders the content of every element in our document in black.
What Is Descendant Selector?
Suppose you want to apply a style rule to a particular element only when it lies inside a particular element. As given in the following example, style rule will apply to <em> element only when it lies inside <ul> tag.
ul em {
color: #000000;
}
What Is Class Selector?
You can define style rules based on the class attribute of the elements. All the elements having that class will be formatted according to the defined rule.
.black {
color: #000000;
}
This rule renders the content in black for every element with class attribute set to black in our document.
Can You Make A Class Selector Particular To An Element Type?
You can make it a bit more particular. For example
h1.black
{
color: #000000;
}
This rule renders the content in black for only elements with class attribute set to black.
What Is Id Selector?
You can define style rules based on the id attribute of the elements. All the elements having that id will be formatted according to the defined rule.
#black {
color: #000000;
}
This rule renders the content in black for every element with id attribute set to black in our document.
Can You Make A Id Selector Particular To An Element Type?
can make it a bit more particular. For example
h1#black
{
color: #000000;
}
This rule renders the content in black for only elements with id attribute set to black.
What Is The Purpose Of In Measurement Unit?
in − Defines a measurement in inches.
p {word-spacing: .15in;}
What Is The Purpose Of Mm Measurement Unit?
mm − Defines a measurement in millimeters.
p {word-spacing: 15mm;}
What Is The Purpose Of Pc Measurement Unit?
pc − Defines a measurement in picas. A pica is equivalent to 12 points; thus, there are 6 picas per inch.
p {font-size: 20pc;}
What Is The Purpose Of Pt Measurement Unit?
pt − Defines a measurement in points. A point is defined as 1/72nd of an inch.
body {font-size: 18pt;}
What Is The Purpose Of Px Measurement Unit?
px − Defines a measurement in screen pixels.
p {padding: 25px;}
What Is The Purpose Of Vh Measurement Unit?
vh − 1% of viewport height.
h2 { font-size: 3.0vh; }
What Is The Purpose Of Vw Measurement Unit?
vw − 1% of viewport width.
h1 { font-size: 5.9vw; }
Post a Comment