CSS непрозрачность пример
.opacity30 {
opacity: 0.3;
filter: alpha(opacity=30); /* For IE8 and earlier */
}
Grepper
.opacity30 {
opacity: 0.3;
filter: alpha(opacity=30); /* For IE8 and earlier */
}.opacity30{
opacity: 0.3;
filter: alpha(opacity=30);
}