Full Width

<div>
-- Your content --
</div>

Two Columns (without gap)

<div class="items">
  <div>content of first half</div>
  <div>content of second half</div>
</div>

Two Columns (with gap)

<div class="items gap">
  <div>content of first half</div>
  <div>content of second half</div>
</div>

Three Columns (without gap)

<div class="items">
  <div>content of first column</div>
  <div>content of second column</div>
  <div>content of third column</div>
</div>

Three Columns (with gap)

<div class="items gap">
  <div>content of first column</div>
  <div>content of second column</div>
  <div>content of third column</div>
</div>

Four Columns (without gap)

<div class="items">
  <div>content of first column</div>
  <div>content of second column</div>
  <div>content of third column</div>
  <div>content of fourth column</div>
</div>

Four Columns (with gap)

<div class="items gap">
  <div>content of first column</div>
  <div>content of second column</div>
  <div>content of third column</div>
  <div>content of fourth column</div>
</div>

Two Column (30% and 70%)

<div class="columns gap">
  <div class="w30">
    -- content in 30% width section --
  </div>
  <div class="w70">
    -- content in 70% width section --
  </div>
</div>

Two Column (60% and 40%)

<div class="columns gap">
  <div class="w60">
    -- content in 60% width section --
  </div>
  <div class="w40">
    -- content in 40% width section --
  </div>
</div>

Three Column (40%, 30% and 30%)

<div class="columns gap">
  <div class="w40">
    -- content in 40% width section --
  </div>
  <div class="w30">
    -- content in 30% width section --
  </div>
  <div class="w30">
    -- content in 30% width section --
  </div>
</div>