[css] Draw a curve with css

I want to create an animation with css that simulate a wave movement.
I need to change a line-or div- to a curve for this...
The CSS rules that I'm familiar to, make the entire div to semicircular or change element border.
For example: border-radius, or perspective or border-top-radius...
This image show you what I want: curve

Do you have experience about this? or is it possible?
Thanks in Advance...

This question is related to css curve

The answer is


You could use an asymmetrical border to make curves with CSS.

border-radius: 50%/100px 100px 0 0;

VIEW DEMO

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.box {_x000D_
  width: 500px; _x000D_
  height: 100px;  _x000D_
  border: solid 5px #000;_x000D_
  border-color: #000 transparent transparent transparent;_x000D_
  border-radius: 50%/100px 100px 0 0;_x000D_
}
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<div class="box"></div>
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@Navaneeth and @Antfish, no need to transform you can do like this also because in above solution only top border is visible so for inside curve you can use bottom border.

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.box {_x000D_
  width: 500px;_x000D_
  height: 100px;_x000D_
  border: solid 5px #000;_x000D_
  border-color: transparent transparent #000 transparent;_x000D_
  border-radius: 0 0 240px 50%/60px;_x000D_
}
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<div class="box"></div>
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