Code Background Opacity

ISI

ISI

ISI

ISI

ISI

OR

ISI

ISI

ISI

ISI

ISI

<div style=" background: rgb(255, 0, 0) ; opacity: 0.2;">ISI</div>
<div style=" background: rgb(255, 0, 0) ; opacity: 0.4;">ISI</div>
<div style=" background: rgb(255, 0, 0) ; opacity: 0.6;">ISI</div>
<div style=" background: rgb(255, 0, 0) ; opacity: 0.8;">ISI</div>
<div style=" background: rgb(255, 0, 0) ; opacity: 1;">ISI</div>

OR

<div style=" background: rgb(243, 191, 189) ; ">ISI</div>
<div style=" background: rgb(246, 143, 142) ; ">ISI</div>
<div style=" background: rgb(249, 95 , 94)  ; ">ISI</div>
<div style=" background: rgb(252, 47, 47)   ; ">ISI</div>
<div style=" background: rgb(255, 0, 0)     ; ">ISI</div>

http://www.css3.info/preview/opacity/