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tag "iframe" 
<iframe src="https://amazon.com">sorry</iframe>
<iframe>
is used to display another web site inside our web page. Also youtube videos can be embedded into iframes
by Valeri Tandilashvili
5 years ago
0
HTML
tags
HTML - Build a Website | Tutorial
1
dl 
<dl> <!-- description list tag-->
  <dt>description term 1</dt>
  <dd>describe description 1</dd>
  <dt>description term 2</dt>
  <dd>describe description 2</dd>
</dl>
by Valeri Tandilashvili
5 years ago
0
HTML
tags
HTML - Build a Website | Tutorial
1
font shorthand 
font: bold italic 14px Tahoma;
The above style is a shorthand property of the following four properties: 
font-weight: bold; 
font-style:italic; 
font-size: 14px; 
font-family: Tahoma;
by Valeri Tandilashvili
5 years ago
0
CSS
shorthand
HTML5 and CSS3 beginners tutorials
1
border-bottom shothand 
border-bottom: 3px dashed orange;
The above style is a shorthand property of the following three properties:
border-bottom-width: 20px; 
border-bottom-style: dotted; 
border-bottom-color: blue;
by Valeri Tandilashvili
5 years ago
0
CSS
shorthand
HTML5 and CSS3 beginners tutorials
1
child selectors
Selects all the 
p
elements that have 
div
element as a parent of any level
div p { 
    color: red; 
}
Selects all the 
p
elements that are children of the element with id 
#id1
#id1 p { 
    color: green; 
}
Selects all 
p
elements that have parent element with class 
.class1
.class1 p { 
    color: yellow; 
}
by Valeri Tandilashvili
5 years ago
0
CSS
selectors
HTML5 and CSS3 beginners tutorials
1
pseudo-element "first-line"
We can style the first line of the paragraph text differently
p::first-line {
    color: blue;
    font-size: 20px;
    font-weight: bold;
    background-color: yellow;
}
by Valeri Tandilashvili
5 years ago
0
CSS
pseudo-elements
HTML5 and CSS3 beginners tutorials
1
pseudo-element "first-letter"
We can style The first letter of the paragraph differently
p::first-letter {
    color: blue;  
    font-size: 20px;  
    font-weight: bold;  
    background-color: yellow;
}
by Valeri Tandilashvili
5 years ago
0
CSS
pseudo-elements
HTML5 and CSS3 beginners tutorials
1
p:first-letter & p:first-line
They were pseudo-classes in CSS2, but in CSS3 they are introduced as pseudo-elements with double colon (
p::first-letter
& 
p::first-line
)
by Valeri Tandilashvili
5 years ago
0
CSS
pseudo-elements
HTML5 and CSS3 beginners tutorials
1
::after, ::before, ::first-letter, ::first-line
CSS3 introduced these notations (with two colons) to distinguish pseudo-classes from pseudo-elements. Browsers also accept 
:after
, 
:before
, 
:first-letter
, 
:first-line
, introduced in CSS2
by Valeri Tandilashvili
5 years ago
0
CSS
pseudo-elements
CSS
1
Error: Duplicate ID
Several 
id
attributes with the same value is not allowed
by Valeri Tandilashvili
5 years ago
0
HTML
Error
1
Results: 1580