Font size sample

        <span style="font-size: xx-small;">  sample 1</span><br />
        <span style="font-size: x-small;">   sample 2</span><br />
        <span style="font-size: small;">     sample 3</span><br />
        <span style="font-size: medium;">    sample 4</span><br />
        <span style="font-size: large;">     sample 5</span><br />
        <span style="font-size: x-large;">   sample 6</span><br />
        <span style="font-size: xx-large;">  sample 7</span><br />
        <span style="font-size: larger;">    sample 8</span><br />
        <span style="font-size: 150%;">      sample 9</span><br />