CSS3 변환을 사용하여 블록 Div에서 경사진 모서리를 얻는 방법은 무엇입니까?

<code class="html">&lt;div class=&quot;box&quot;&gt;
  Text Content
&lt;/div&gt;</code>

<code class="css">.box {
  width: 200px;
  height: 35px;
  line-height: 35px;
  padding: 0 5px;
  background-color: #ccc;
  padding-right: 20px;
  border: solid 1px black;
  border-right: 0;
  position: relative;
}

.box:after {
  content: "";
  display: block;
  background-color: #ccc;
  border: solid 1px black;
  border-left: 0;
  width: 35px;
  height: 35px;
  position: absolute;
  z-index: -1;
  top: -1px;
  right: -17.5px;
  transform: skew(-45deg);
  -o-transform: skew(-45deg);
  -moz-transform: skew(-45deg);
  -webkit-transform: skew(-45deg);
}</code>