Pseudo CSS Selectors

profesora92 1,177 views 25 slides Dec 14, 2012
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Slide Content

Pseudo
CSS Selectors

Link-related
pseudo class selectors

:link
<a href = “google.com”>unvisited link</a>

/* set default style for unvisited link */
a:link{
color : blue;
text-decoration : underline;
}

:visited
<a href = “google.com”>visited link</a>
/* set default style for visited link */
a: visited{
color : red;
text-decoration : underline;
}

:active
<a href = “google.com”>visited link</a>
/* set selected state style for a link */
a: active{
color : red;
}

:hover
<a href = “google.com”>visited link</a>
/* set mouseover style for link */
a: hover{
color : red;
}

Input & link related
pseudo class selectors

:focus
<input type = “text” name=“user_name”/>
/* onfocus change field background */
input: focus{
background : red;
}

:target
<a href = “#set”>SET</a>
<div id =“set”>This is set</div>
/* change style of target element */
: target {
background : red;
}

:enabled | :disabled
<input type = “text” />
<input type = “text” disabled="disabled"/>

Input : enabled { /* change style of enabled element */
background : red;
}
Input : disabled { /* change style of enabled element */
background : blue;
}

:checked
<input type = “checkbox” checked="checked"/>
<input type = “radio” checked="checked" />
<input type = “checkbox” checked="checked"/>


/* change style of checked element */
Input : checked{
width : 200px;
}

Position/Number-based
pseudo class selectors

:root
/* SELECT ROOT Document Element */
:root{
background : red;
}
/* Will select the <html> element*/

:first-child | :last-child
<ul>
<li>A</li> <li>B</li> <li>C</li>
</ul>
ul li : first-child { /* select first item*/
background : blue;
}
ul li : last-child { /* select last item*/
background : red;
}

:nth-child(N) | :nth-last-child(N)
<ul>
<li>A</li> <li>B</li> <li>C</li>
</ul>
ul li : nth-child(N/odd|even) {
background : blue;
}
ul li:nth-last-child(N/odd|even){
background : red;
}

:first-of-type | :last-of-type
<div>
<p>A</p> <span>B</span> <p>C</p>
</div>
div p : first-of-type { /* select first item of type p */
background : blue;
}
div p : last-of-type { /* select last item of type p*/
background : red;
}

:nth-of-type(N) | :nth-last-of-type(N)
<div>
<p>A</p> <span>B</span> <p>C</p>
</div>
div p : nth-of-type(N/odd|event){
background : blue;
}
div p : nth-of-type(N/odd|event){
background : red;
}

:only-of-type
<div>
<p>A</p> <span>B</span> <p>C</p>
</div>
/* select only one element from type span */
div span : only-of-type {
background : blue;
}

Relational
pseudo class selectors

:not(S)
<div class=“element”></div>
<span class=“element”></span>
<p class=“element”></p>
/* select all non span elements */
.element : not(span) {
background : blue;
}

:empty
<p></p> <!-- select first item -->
<p>Content</p>
/* select the empty p element */
p : empty {
background : blue;
}

Text-related
pseudo class selectors / elements

:first-letter | :first-line
<p> Lorem ipsum dolor si amet </p>
p : first-letter { /* change first letter of text style*/
font-size : 25px;
font-weight : bold
}
p : firs-line { /* change first line of text style*/
text-decoration : underline
}

Content-related
pseudo "elements"

:before | :after
<span> Some text </span>
span : before { /* add extra content before span */
content : “ … ”
}
span : after { /* add extra content before span */
content : “ … ”
}