text with transparent background w3 school code example

Example 1: css opacity example

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

Example 2: css make text transparent

.text
    {
        font-family: Garamond, serif;
        font-size: 12px;
        color: rgba(0, 0, 0, 0.5);
    }