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.ms-webpart-titleText.ms-webpart-titleText,
    .ms-webpart-titleText > a {
        background-color: black;
        /* changes the background color of the web part header.  Hex too! #000000 */
        
        font-size: 20px;
        /* Font Size */
        
        font-weight: bold;
        /* Font bold, italics, */
        
        color: white;
        /*Font color */
        
        padding: 5px 5px;
        /*padding around fonts */
    }