<ul class="navhelp">
<li class="step1"><strong>Browse images</strong> in our galleries</li>
<li class="step2"><strong>Add images</strong> to your "favorites" list</li>
<li class="step3"><strong>Pick products</strong> to imprint</a></li>
</ul>

...

<style>
/* Navigation helpers */
.section-customize .navhelp .step1 {
  background-image: url(images/icon-customize-step-1.png);
}
.section-customize .navhelp .step2 {
  background-image: url(images/icon-customize-step-2.png);
}
.section-customize .navhelp .step3 {
  background-image: url(images/icon-customize-step-3.png);
}
.section-customize .navhelp .step4 {
  background-image: url(images/icon-customize-step-4.png);
}
.section-node-add .navhelp .step1, .section-diy .navhelp .step1 {
  background-image: url(images/icon-diy-step-1.png);
}
.section-node-add .navhelp .step2, .section-diy .navhelp .step2 {
  background-image: url(images/icon-diy-step-2.png);
}
.section-node-add .navhelp .step3, .section-diy .navhelp .step3 {
  background-image: url(images/icon-diy-step-3.png);
}
.section-node-add .navhelp .step4, .section-diy .navhelp .step4 {
  background-image: url(images/icon-diy-step-4.png);
}
</style>

I just hate to see a good structure go to waste.

HTML