e padding space -->
    <div class="longbox"></div> <!-- Saturate the border space -->
    <div class="longbox"></div> <!-- Saturate the margin space -->

    <div class="longbox"></div> <!-- Saturate the margin space -->
    <div class="longbox"></div> <!-- Saturate the border space -->
    <div class="longbox"></div> <!-- Saturate the padding space -->
    <div class="box"></div>
    <div class="longbox"></div> <!-- Saturate the padding space -->
    <div class="longbox"></div> <!-- Saturate the border sp