tapered div using CSS

I'm trying to achieve a tapered <div> tag. That is, a slant edge on one side (slanting inwards) and a straight edge on all the other 3 sides.

I'm not sure if it is possible using CSS and HTML alone. I've tried Googling this problem, but could not find any solution to it.

I've tried:

-webkit-border-bottom-right-radius : 50px 650px;

where 650px is the whole height if my div. But this gives me a rounded corner for the bottom right position, which I don't want. Hope you guys know the answer to this problem, or at least suggest an alternative to this.

Solution

This can be achieved with transparent border!

CSS

#test1 {
  border-top: 100px solid red;
  border-bottom: 100px solid red;
  border-right: 100px solid transparent;

  width: 300px;
}

#test2 {
  border-top: 100px solid red;
    border-right: 50px solid transparent;
    height: 0;
    width: 100px;
}

#test3 {
  border-top: 100px solid red;
    border-right: 50px solid transparent;
    height: 100px;
    width: 100px;

    content: 'ds';
  z-index: -1; /* make it the background */
}

#test3 .content {
    position: relative;
    top: -100px;
    margin: 5px;
    float: left; /* wrap the text */
    clear: left; /* for demo */
    font-size: 1em;
    background-color: cyan;
}

HTML

  <body>
    <div id="test1">
    </div>

    <br/>

    <div id="test2">
    </div>

    <br/>
    <div id="test3">
      <div class="content">
        Watch for the<br>
        new lines. <br>
        Do not overlap.
      </div>
    </div>
  </body>