Alignment can also be the last attribute within a block definition:
  input: |
    p<(class). Text.

    p=(class). Text.

    p>(class). Text.

    p<>(class). Text.

    p(class)<. Text.

    p(class)=. Text.

    p(class)>. Text.

    p(class)<>. Text.
  expect: |
    <p class="class" style="text-align:left;">Text.</p>

    <p class="class" style="text-align:center;">Text.</p>

    <p class="class" style="text-align:right;">Text.</p>

    <p class="class" style="text-align:justify;">Text.</p>

    <p class="class" style="text-align:left;">Text.</p>

    <p class="class" style="text-align:center;">Text.</p>

    <p class="class" style="text-align:right;">Text.</p>

    <p class="class" style="text-align:justify;">Text.</p>