title: Draw a curve with css
body: <p>I want to create an animation with css that simulate a wave movement.<br>
  I need to change a line-or div- to a curve for this...<br>
  The CSS rules that I'm familiar to, make the entire div to semicircular or change element border.<br>
  For example: 
  <code>border-radius</code>, or <code>perspective</code> or <code>border-top-radius</code>...<br>
  This image show you what I want:
  <img src="https://i.stack.imgur.com/GMiT2.png" alt="curve"></p>
  
  <p>Do you have experience about this? or is it possible?
  <br>Thanks in Advance...</p>