Introduction to CSS syntax and selectors - lesson 2

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Introduction to CSS Syntaxand Selectors - Lesson
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What is CSS Syntax
The syntax for CSS is different than that of
HTML markup. Though it is not too confusing, once
you take a look at it. A style rule is made of
three parts Example Here
Selector Property Value
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Syntax
Selector A selector is an HTML tag at which a
style will be applied. This could be any tag like
lth1gtorlttablegt 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 the value
either red or F1F1F1 etc
Example Here
H1 colorc20000
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Selector
There are seven types of Selectors You can define
selectors in various simple ways based on your
comfort. We have Seven type of selector let me
Define these selectors one by one.

• Class Selectors
• Id Selectors
• Descendant Selectors
• Child Selectors
• Attribute Selectors
• Tag Selectors
• Grouping Selectors

(Note Any selectors name should not be same or
selector should not be written in numerical)
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The Class Selectors
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.
Example Here
.class-name color c20000
You can apply more than one class selectors to a
given element. Consider the following example
Example Here
ltdiv class"class-name" gtAdd your external file
link on html document lt/divgt
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Selector
The Id Selectors 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.
Example Here
id-name font-siz40px
You can apply more than one Id selectors to a
given element. Consider the following example
Example Here
ltdiv id"id-name" gtAdd your external file link on
html document lt/divgt
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Selector
The Descendant Selectors 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, the style rule
will apply to ltagtelement only when it lies inside
the ltligttag.
Example Here
Li a font-siz40px
You can apply more than one Descendant selectors
to a given element. Consider the following
example
Example Here
ltli gtltagtAdd your external file link on html
document lt/agtlt/ligt
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Selector
The Child Selectors You have seen the descendant
selectors. There is one more type of selector,
which is very similar to descendants but have
different functionality. Consider the following
example
Example Here
.class-name p color000
You can apply more than one child selectors to a
given element. Consider the following example
Example Here
ltdiv class"class-name"gtltp gtAdd your external
file link on html document lt/pgtlt/divgt
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Selector
The Attribute Selectors 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
Example Here
Input type"text" color000
You can apply more than one child selectors to a
given element. Consider the following example
Example Here
ltinput type"text" /gt
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Selector
The Tag Selectors You have seen the descendant
selectors. There is one more type of selector,
which is very similar to descendants but have
different functionality. Consider the following
example
Example Here
p color09a905
You can apply more than one child selectors to a
given element. Consider the following example
Example Here
ltp gtAdd your external file link on html document
lt/pgt
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Selector
The Grouping Selectors You can apply a style
to many selectors if you like. Just separate the
selectors with a comma, as given in the following
example
Example Here
h1, h2, h3 color 36C
font-weight normal font-size20px
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Selector
This define style rule will be applicable to h1,
h2 and h3 element as well. The order of the list
is irrelevant. All the elements in the selector
will have the corresponding declarations applied
to them.
Example Here
.class-name .class2 .class3 color
36C font-weight normal
font-size20px
content, footer, supplement color
36C font-weight normal
font-size20px
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