CSS - Rotate border - is it possible?
<p>Now I have somethink like this, but it's not very 'responsive' solution. I have idea to rotate border - left or right but I don't know how to do this - is it possible to do this with standard border?</p>

<p>Here is actual solution: </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>.slant-box .slant-box-content {
  display: inline-block;
  left: 50px;
  position: relative;
  top: -50px;
}
.slant-box:before {
  content: '';
  display: inline-block;
  height: 150px;
  transform: rotate(20deg);
  width: 2px;
  background: red;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="container"&gt;
  &lt;div class="cta-content"&gt;
    &lt;div class="row"&gt;
      &lt;div class="col-md-12"&gt;
        &lt;div class="slant-box"&gt;
          &lt;div class="slant-box-content"&gt;
            &lt;p class="text-uppercase"&gt;
              Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
            &lt;/p&gt;
            &lt;p&gt;
              tempor incididcillum dolore eu fugiat nulla pariatur.
            &lt;/p&gt;
          &lt;/div&gt;
        &lt;/div&gt;
        &lt;!-- /.slant-box --&gt;
      &lt;/div&gt;
      &lt;!-- /.col-md-8 col-md-offset-2 --&gt;
    &lt;/div&gt;
    &lt;!-- /.row --&gt;
  &lt;/div&gt;
  &lt;!-- /.cta-content --&gt;
&lt;/div&gt;
&lt;!-- /.container --&gt;</code></pre>
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</div>
</p>

<p><strong><a href="https://jsfiddle.net/7eLy1pmL/" rel="nofollow">FIDDLE LINK</a></strong></p>