CSS display

With the display property you can specifies if or how an HTML element is displayed in the web page.
- Values: - Syntax:
display: value;
Example (remove a DIV, displays <a> tags as block elements and <li> with inline):
<style>
#idd { display: none; }
.a_block { display: block; }
#idu li { display: inline; }
</style>

<h4>Example CSS display </h4>
<p>In this HTML page a Div is not shown, displays A tags as block elements and LI with inline.</p>

<div id='idd'>Removed content.</div>
<a href='//coursesweb.net/css' title='CSS course' class='a_block'>CSS course</a> <a href='//coursesweb.net/html' title='HTML course' class='a_block'>HTML course</a>
<ul id='idu'>
<li>List 1</li>
<li>List 2</li>
<li>List 3</li>
</ul>

CSS visibility

The visibility property can control if an element is visible or not. Even if the element is hidden, still affects layout and will take up space on the web page, where it should to be displayed.

- Values: - Syntax:
visibility: value;
Example (make a <span> invisible):
<style>
 #idd span { visibility: hidden; }
</style>

<h4>Example CSS visibility</h4>
<div id='idd'>This row contains a text <span>in a SPAN tag</span> that is hidden but still takes up space.</div>

CSS clip - Define the visible portion of an element

Defining the visible surface of an element determines its visible portion. The remaining contents of that element does not disappear, but is invisible to the visitor.
The element must have set position:absolute, then, to define the visible region it's used the clip property with rect value that sets the shape of the visible region.
- Values: - Syntax:
clip: value;
Example:
<style>
#idd {
position: absolute;
clip: rect(0, 200px, 23px, 60px);
}
</style>

<h4>Example CSS clip</h4>
<div id='idd'>Free CSS: coursesweb.net/css</div>

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag adds an image in web page?
<div> <img> <span>
<img src="http://coursesweb.net/imgs/webcourses.gif" width="191" height="63" alt="Courses-Web" />
Which of these CSS codes displays the text oblique?
font-style: italic; text-decoration: underline; font-weight: 500;
#id {
  font-style: italic;
}
Click on the jQuery function used to hide with animation a HTML element.
click() hide() show()
$(document).ready(function() {
  $(".a_class").click(function(){ $(this).hide("slow"); });
});
Click on the correctly defined function in PHP.
fname function() {} function fname() {} function $fname() {};
function fname($a, $b) {
  echo $a * $b;
}
Display and Visibility

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