body {
  margin: 0;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

.content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  display: grid;
  grid-template-columns: repeat(2, 25vw);
  grid-template-rows: repeat(2, 25vw);
}

.image {
  margin: 0;
  height: 0;
  padding-top: 25vw;
  overflow: hidden;
  position: relative;
  transition: clip-path 1s;
}

.image:first-child {
  clip-path: circle(100% at 100% 100%);
}

.image:nth-of-type(2) {
  clip-path: circle(100% at 0% 100%);
}

.image:nth-of-type(3) {
  clip-path: circle(100% at 100% 0%);
}

.image:nth-of-type(4) {
  clip-path: circle(100% at 0% 0%);
}

.image:hover {
  clip-path: circle(100% at 50% 50%);
}

img {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  object-fit: cover;
  object-position: top;
  box-sizing: border-box;
}