Text shadow
 

The shadow filter is one of the useful filters for IE.

.text_shadow{
filter: Shadow(Color=#999999, Direction=135, Strength=5);
height: 1%;
}

The text-shadow declaration allows you to create a text shadow; i.e. a slightly moved, slightly blurred copy of a text. I assume it could be useful in serious designs, but I hope it won't be abused too much once it's become mainstream.

Basic text-shadow:

h1
{
text-shadow: 2px 2px #ff0000;
}

text-shadow css property value actually copy the same text with original font and position it relative to the original text.it will create the effect of shadowness.
Following example will explain it.
h1
{
//PROPERTY //BOTTOM //RIGHT //DUPLICATED TEXT COLOR
text-shadow : 2px 2px #0000ff;
}

text-shadow: 2px 2px 2px #000000;