Estoy aprendiendo diseño web frontend y estoy tratando de construir un blog totalmente receptivo como una página estática.

Pero mi problema es que la imagen no se alinea correctamente con el párrafo.

Como el "No te olvides de seguir!" se suponía que la imagen debía aparecer en la primera publicación de contenido, solo eso. No olvides que el seguimiento debe ser con contenido. ¿Qué es Lorem Ipsum?

Mi pregunta es¿Por qué sucede esto? solución que he visto aquí¿Cómo flotar el párrafo junto a la imagen sin envolver la imagen? pero no entendí por qué este problema realmente sucede.

body {
  background-color: #DCDBD9;
  color: #2C2C2C;
  font: normal 100% Cambria, Georgia, serif;
}
h1 {
  font-size: 1.5em;
  font-style: italic;
  font-weight: normal;
}
h1 a {
  color: #747474;
  font: bold 0.45833em Calibri, Optima, Arial, sans-serif;
  letter-spacing: 0.15em;
  text-transform: : uppercase;
  text-decoration: none;
}
#page {
  margin: 36px auto;
  width: 90%;
}
#nav {
  float: right;
  /*padding: 42px 0 0 30px;*/
}
#nav li {
  float: left;
  margin: 0 0 0 5px;
}
.blog {
  clear: both;
  margin: 50px auto 53px;
  width: 93.75%;
}
.blog .main {
  float: left;
  width: 62.88%;
  /* 566px / 900px */
}
.blog .other {
  float: right;
  width: 36.77%;
  /* 331px / 900px */
}
.lede {
  padding: 0.8em 5.333%;
}
.recent-entries {
  margin: 0 auto;
  width: 69.788%;
  /* 231 / 331px */
}
.article {
  padding: 40px 8.480%;
}
.date {
  float: left;
  margin-left: -17.088%;
  /* 81px / 474px */
  width: 14.55%;
  /* 69px / 474px */
  border: 1px solid black;
  border-radius: 2px;
  padding: 0.59%;
  transition-property: background;
  transition-duration: 0.3s;
  transition-timing-function: ease;
}
.date:hover {
  background: #9c3;
}
img,
embed,
object,
video {
  max-width: 100%;
}
.figure {
  float: right;
  margin-bottom: 0.5em;
  margin-left: 2.531%;
  /* 12px / 474px */
  width: 48.734%;
  /* 231px / 474px */
}
h2 {
  color: #F90B6D;
  font-family: 'Open Sans', sans-serif;
  font-size: 1.2em;
  font-weight: 300;
}
p {
  color: #222;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.9em;
  font-weight: 400;
}

<!--  <h1> This is the top header! <a href="#"> Read More </a> </h1> -->

<div id="page">

  <ul id="nav">
    <li><a href="#">About me</a>
    </li>
    <li><a href="#">About Blog</a>
    </li>
    <li><a href="#">Stuff</a>
    </li>
    <li><a href="#">Junk Stuff</a>
    </li>
  </ul>
  <div class="blog section">
    <h1 class="lede">Responsive Blog </h1>
    <div class="main">

      <div class="article">
        <div>
          <div class="date">
            1 Sept 2015
          </div>
          <h2> What is Lorem Ipsum ?</h2>
          <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
            It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages , and more recently
            with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>

          <div class="figure">
            <p>
              <img src="http://i.stack.imgur.com/I3hYQ.png" alt="">
              <b class="figcaption">Remember This</b>
            </p>
          </div>
        </div>

        <div class="date">
          5 Sept 2015
        </div>
        <h2> Where does it comes from ? </h2>
        <p>Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked
          up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus
          Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from
          a line in section 1.10.32. The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original
          form, accompanied by English versions from the 1914 translation by H. Rackham.</p>


      </div>
    </div>
    <!--/end.main -->
    <div class="other">
      <p>Recent Enteries</p>
      <div class="recent-entries">
        <p>1.Simply First Entry</p>
        <p>2. Simply second Entry</p>
      </div>
    </div>
    <!-- /end .other -->
  </div>
  <!--/end .blog.section -->
</div>
<!-- /end #page-->