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      <h1>Bootstrap grid examples</h1>
      <p class="lead">Basic grid layouts to get you familiar with building within the Bootstrap grid system.</p>

      <h3>Five grid tiers</h3>
      <p>There are five tiers to the Bootstrap grid system, one for each range of devices we support. Each tier starts at a minimum viewport size and automatically applies to the larger devices unless overridden.</p>

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