Transparency settings opacity property
Examples
<! DOCTYPE HTML > < HTML > < head > < style > div { background-Color : Red ; Opacity : 0.5 ; filter : the Alpha (Opacity = 50) ; / * IE8 and earlier browsers * / } </ style > </ head > < body > < div > opacity of this element is 0.5. Please note that text and background colors are affected by the level of opacity. </ Div > </ body > </html>
effect: