n-self values, from
         https://www.w3.org/TR/css-align-3/#propdef-align-self -->
    <!-- auto | normal | stretch -->
    <div class="container"><div class="alignStart"><!--auto--></div></div>
    <div class="container"><div class="alignStart"><!--normal--></div></div>
    <div class="container"><div class="alignStart"><!--stretch--></div></div>
    <br>
    <!-- <baseline-position> -->
    <div class="container"><div class="alignStart"><!--baseline--></div></div>
    <br>
    <!-- <self-position>, pa