css make the background transparent code example

Example 1: css opacity example

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

Example 2: container transparent text opaque

.mycontainer {
    background: rgb(60, 60, 60);
    background: rgba(60, 60, 60, 0.4);
}

.mycontainer a {
    color: #fff;
}