Edit in JSFiddle

<h1> The Truly Great</h1>

<p id = "firstLine" class = "underline font-16">I think continually of those who were truly great.</p>

<p>Who, <span class = "highlight">from the womb, remembered the soul’s history</span></p>

<p>Through corridors of light, <span class = "highlight">where the hours are suns,</span></p>

<p>Endless and singing. Whose lovely ambition</p>

<p><span class = "highlight">Was that their lips, still touched with fire,</span></p>

<p>Should tell of the Spirit, clothed from head to foot in song.</p>

<p>And who hoarded from the Spring branches</p>

<p>The desires falling across their bodies like blossoms.</p>
h1,p
{
    font-family:sans-serif;
}
#firstLine {
    font-weight:bold;
}

.highlight
{
    background-color:yellow;
    padding:5x;
}
.underline
{
     text-decoration : underline; 
}
.font-16
{
    font-size:14pt;
}