title: I'm trying to add some <li> element, but the lists never appear
body: <p>I am trying to make a to do list app. I just finished input part, but I have a trouble with make a list. In my code, After the  the  part can not appear, there is no text after the header. I have tried change the code <code>&lt;div&gt;...&lt;/div&gt;</code> to <code>&lt;p&gt;...&lt;/p&gt;</code>, but it still does not work. I want know whats wrong with my code.    </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>body,
  input,
  button {
    font-family: 'Orbitron', sans-serif;
  }
  
  header {
    width: 100%;
    height: 300px;
    top: 0;
    left: 0;
    box-shadow: 0px 2px 4px rgba(44, 62, 80, 0.15);
    position: fixed;
    background-color: #25b99a;
    outline: none;
    padding: 15px;
    box-shadow: 0px 2px 4px rgba(44, 62, 80, 0.15);
  }
  
  header input {
    width: 100%;
    height: 75px;
    top: 200;
    float: left;
    font-size: 20px;
    font-weight: 400;
    text-indent: 30px;
    margin-top: 35px;
    background: rgba(255, 255, 255, 0.3);
    border-top-left-radius: 15px;
    border-top-right-radius: 35.5px;
    border-bottom-right-radius: 35.5px;
    border-bottom-left-radius: 15px;
    outline: none;
    box-shadow: none;
    border: 0;
    -webkit-appearance: none;
    -moz-appearance: none;
    position: sticky;
  }
  
  header button {
    width: 75px;
    height: 75px;
    position: absolute;
    top: 137px;
    right: 15px;
    z-index: 2;
    border-radius: 35.5px;
    background: #fff;
    border: 0px;
    box-shadow: none;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
  }
  
  header input::-webkit-input-placeholder {
    color: rgba(255, 255, 255, 0.75);
  }
  
  header input:-moz-input-placeholder {
    color: rgba(255, 255, 255, 0.75);
  }
  
  header input::-moz-input-placeholder {
    color: rgba(255, 255, 255, 0.75);
  }
  
  header input:-ms-input-placeholder {
    color: rgba(255, 255, 255, 0.75);
  }
  
  header button svg {
    width: 26px;
    height: 26px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -13px 0 0 -13px;
  }
  
  header button svg .addIcon {
    fill: #25b99a;
  }
  
  p {
    font-size: 300%;
    color: rgba(255, 255, 255);
  }
  
  .container {
    width: 100%;
    float: left;
    padding: 20px;
  }
  
  ul.todo {
    width: 100%;
    float: left;
    height: 50px;
    background: #fff;
    border-radius: 5px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;header&gt;
    &lt;p class="text-center" style="font-size:300%;color:rgba(255,255,255);"&gt;To Do List&lt;/p&gt;
    &lt;input type="text" placeholder="What is your plan " id="plan"&gt;
    &lt;button id="add"&gt;
            &lt;svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"viewBox="0 0 16 16" style="enable-background:new 0 0 16 16;" xml:space="preserve"&gt;&lt;g&gt;&lt;path class="addIcon" d="M16,8c0,0.5-0.5,1-1,1H9v6c0,0.5-0.5,1-1,1s-1-0.5-1-1V9H1C0.5,9,0,8.5,0,8s0.5-1,1-1h6V1c0-0.5,0.5-1,1-1s1,0.5,1,1v6h6C15.5,7,16,7.5,16,8z"/&gt;&lt;/g&gt;&lt;/svg&gt;
           &lt;/button&gt;
  &lt;/header&gt;
  
  &lt;div class="container"&gt;
    &lt;ul class="todo"&gt;
      &lt;li&gt;hahahaha&lt;/li&gt;
      &lt;li&gt;hahahaha&lt;/li&gt;
      &lt;li&gt;hahahaha&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>