a:hover {
    background-color: yellow;
    color: red;
}
span:hover {
    background-color: yellow;
}

SPAN.highlighter:hover {
    background-color: #ccffcc;
}
body {
    background: white;
    }
P.blocktext {
    text-indent: 0.2in;
    margin-left: auto;
    margin-right: auto;
    width: 35%;
    }
.code-block {
    background-color: #eeeeff;
    margin-left: auto;
    margin-right: auto;
    width: 55%;
    }
PRE {
    background-color: #eeeeff;
    width: 100%;
    }
HR.blocktext {
    margin-left: auto;
    margin-right: auto;
    width: 55%;
    }
P.widetext {
    text-indent: 0.2in;
    margin-left: auto;
    margin-right: auto;
    width: 65%;
    }
P.extrawidetext {
    text-indent: 0.2in;
    margin-left: auto;
    margin-right: auto;
    width: 85%;
    }
blockquote.standard {
    text-indent: 0.2in;
    margin-left: auto;
    margin-right: auto;
    width: 75%;
    }
blockquote.blocktext {
    text-indent: 0.2in;
    margin-left: auto;
    margin-right: auto;
    width: 55%;
    }
BLOCKQUOTE.quotetext {
    text-indent: 0.2in;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}
TABLE.chart {
    margin-left: auto;
    margin-right: auto;
    }
ul.blocktext {
    margin-left: auto;
    margin-right: auto;
    width: 50%;
    }
H1 {
    text-align: center;
    }
H1.narrow {
    margin-left: auto;
    margin-right: auto;
    width: 50%;
    }
H2 {
    text-align: center;
    }
H3 {
    text-align: center;
    }
H4 {
    text-align: center;
    }
H5 {
    text-align: center;
    }
IMG {
    display: block;
    margin-left: auto;
    margin-right: auto;
    border-width: none;
    }
#smiley {
    display: inline;
    }
#video-block {
    width: 640px;
    padding: 0px;
    border: 4px solid blue;
    margin: 0;
    display: block;
    }
IFRAME.youtube-player {
    display: block;
    margin-left: auto;
    margin-right: auto;
    }
IFRAME.vimeo-player {
    display: block;
    margin-left: auto;
    margin-right: auto;
    }