opacity the post wrapper (BlogInn) Cheap Transparent in a class css

main.scss

.entry-title {
    background-color: $picton-blue;
    clear: both;
    color: $white;
    float: left;
    font-size: 36px;
    margin: 60px 0 0;    
    max-width: 75%;
    padding: 30px;
    -ms-word-wrap: break-word;
    word-wrap: break-word;


    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";       /* IE 8 */
    filter: alpha(opacity=70);  /* IE 5-7 */
    -moz-opacity: 0.7;          /* Netscape */
    -khtml-opacity: 0.70;        /* Safari 1.x */
    opacity: 0.7;               /* Good browsers */
}