• 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 tag is used to include external CSS file in web page?
<body> <script> <link>
<link href="/templ/style.css" rel="stylesheet" type="text/css" />
Which CSS property sets the text size?
font-weight text-decoration font-size
h2 {
  font-size: 1em;
}
Indicate the JavaScript property that can add HTML code into an element.
text value innerHTML
document.getElementById("someID").innerHTML = "HTML content";
Click on the function that returns the number of characters of a string in PHP.
count() strlen() stristr()
$str = "http://CoursesWeb.net/";
$nr_chr = strlen($str);
echo $nr_chr;       // 22
Triangles with CSS

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