• Triangle Down         • Triangle Left              • Triangle Right
  • Triangle Top-Left     • Triangle Top-Right     • Triangle Bottom-Left
  • Triangle Bottom-Right

Various triangle shapes with CSS, created only with a sinlge DIV tag and a few CSS properties.

Triangle Up

Code:
<style type="text/css">
#triangleup {
 width: 0;
 height: 0;
 border-left: 50px solid transparent;
 border-right: 50px solid transparent;
 border-bottom: 100px solid blue;
}
</style>

<div id="triangleup"><br/><br/><br/>>UP</div>
Demo:



UP

Triangle Down

Code:
<style type="text/css">
#triangledown {
 width: 0;
 height: 0;
 border-left: 50px solid transparent;
 border-right: 50px solid transparent;
 border-top: 100px solid blue;
}
/* For the content in triangle */
#triangledown div{ margin:-85px 0 0 -20px; }
</style>

<div id="triangledown"><div>DOWN</div></div>
Demo:
DOWN

Triangle Left

Code:
<style type="text/css">
#triangleleft {
 width: 0;
 height: 0;
 border-top: 50px solid transparent;
 border-bottom: 50px solid transparent;
 border-right: 100px solid blue;
}
/* For the content in triangle */
#triangleleft div{ margin:-10px 0 0 25px; }
</style>

<div id="triangleleft"><div>LEFT</div></div>
Demo:
LEFT

Triangle Right

Code:
<style type="text/css">
#triangleright {
 width: 0;
 height: 0;
 border-top: 50px solid transparent;
 border-bottom: 50px solid transparent;
 border-left: 100px solid blue;
}
/* For the content in triangle */
#triangleright div{ margin:-10px 0 0 -85px; }
</style>

<div id="triangleright"><div>RIGHT</div></div>
Demo:
RIGHT

Triangle Top-Left

Code:
<style type="text/css">
#triangletopleft {
 width: 0;
 height: 0;
 border-top: 100px solid blue;
 border-right: 50px solid transparent;
}
</style>

<div id="triangletopleft">...</div>
Demo:
...

Triangle Top-Right

Code:
<style type="text/css">
#triangletopright {
 width: 0;
 height: 0;
 border-top: 100px solid blue;
 border-left: 50px solid transparent;
}
</style>

<div id="triangletopright">...</div>
Demo:
...

Triangle Bottom-Left

Code:
<style type="text/css">
#trianglebottomleft {
 width: 0;
 height: 0;
 border-bottom: 100px solid blue;
 border-right: 50px solid transparent;
}
</style>

<div id="trianglebottomleft">...</div>
Demo:
...

Triangle Bottom-Right

Code:
<style type="text/css">
#trianglebottomright {
 width: 0;
 height: 0;
 border-bottom: 100px solid blue;
 border-left: 50px solid transparent;
}
</style>

<div id="trianglebottomright">...</div>
Demo:
...

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which meta tag provides a short description of the page?
<meta content="..."> <meta description="..."> <meta http-equiv="...">
<meta name="description" content="70-160 characters that describes the content of the page" />
Which CSS property is used to stop the wrapping effect of the "float"?
clear text-align position
#some_id {
  clear: both;
}
Click on the method which gets an array with all the elements in the document that have a specified tag name.
getElementsByName() getElementById() getElementsByTagName()
var divs = document.getElementsByTagName("div");
var nr_divs = divs.length;
alert(nr_divs);
Indicate the PHP function which returns the number of elements in array.
is_[) count() strlen()
$arr =[7, 8, "abc", 10);
$nri = count($arr);
echo $nri;        // 4
Triangles with CSS

Last accessed pages

  1. HTML Course - Free Lessons (11042)
  2. Register and show online users and visitors (22722)
  3. Pagination Class - Script to paginate content (1618)
  4. PHP PDO - exec (INSERT, UPDATE, DELETE) MySQL (41518)
  5. The Stage, Panels and Tools in Flash (6329)

Popular pages this month

  1. Read Excel file data in PHP - PhpExcelReader (341)
  2. PhpSpreadsheet - Read, Write Excel and LibreOffice Calc files (281)
  3. Register and show online users and visitors (264)
  4. Courses Web: PHP-MySQL JavaScript Ajax HTML CSS Flash-AS3 (258)
  5. Insert, Select and Update NULL value in MySQL (162)