Semi-oval with CSS

Question

I\'m trying to create a mix between an oval and a semi-circle.

Semi-circles can be created as such in CSS:

.halfCircle{
     height:45px;
     width         


        

Answer 1

I've updated your demo with one possible solution:

div {
  background-color: #80C5A0;
  width: 400px;
  height: 100px;
  border-radius: 50% / 100%;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

By using percentage based units for the border-radius it should always keep a smooth semi-ellipse regardless of your width and height values.

With a few minor changes, here's how you'd render the semi-ellipse split in half vertically:

div {
  background-color: #80C5A0;
  width: 400px;
  height: 100px;
  border-radius: 100% / 50%;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}