Circular Corner Borders 3D Hover Image (CSS Only)

circular-corner-borders-3d-hover-image-css-only.markdown

Circular Corner Borders 3D Hover Image (CSS Only)

Hover image effect with corner borders. CSS only

A Pen by substance on CodePen.

License.

index.html

<div>
  <picture>
    <img src="https://picsum.photos/id/977/1600/800" alt="mushroom" width="400" height="200">
  </picture>
  <div></div>
  <div></div>
</div>

style.css

*,
*::before,
*::after {
  box-sizing: border-box;
  font-family: "Noto Sans Mono", monospace;
}

body,
html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 12pt;
  line-height: 18pt;
  font-weight: 400;
  color: lawngreen;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: #222;
  margin: 0;
  padding: 0;
}

@keyframes dots {
  0% {
    background-position: 30px 30px, 50px 50px;
  }
  50% {
    background-position: 0px 0px, 15px 15px;
  }
  100% {
    background-position: 30px 30px, 50px 50px;
  }
}

div:nth-child(1) {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: black;
  width: 400px;
  height: 200px;
  box-shadow: rgba(0, 0, 0, 0.4) 0px 2px 4px,
    rgba(0, 0, 0, 0.3) 0px 7px 13px -3px;
  border-radius: 10px;
  transform-style: preserve-3d;
  outline: 1px solid lawngreen;
  outline-offset: -15px;
  outline-style: groove;
  z-index: 1;
  transition: all 0.3s ease-in-out;
}

div > div:nth-child(2),
div > div:nth-child(3),
div:nth-child(1)::before,
div:nth-child(1)::after {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 100px;
  z-index: -1;
  content: "";
  border: 2px solid lawngreen;
  color: lawngreen;
  transition: all 0.3s ease-in-out;
}

div:nth-child(1)::before {
  top: -15px;
  right: -15px;
}

div:nth-child(1)::after {
  bottom: -15px;
  left: -15px;
}

div > div:nth-child(2) {
  top: -15px;
  left: -15px;
}

div > div:nth-child(3) {
  bottom: -15px;
  right: -15px;
}

div > picture {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: auto;
  overflow: hidden;
  border-radius: 10px;
  outline: 1px ridge lawngreen;
  outline-offset: -10px;
  transform-style: preserve-3d;
  z-index: 2;
  transition: all 0.3s ease-in-out;
}

div > picture::before {
  content: "MUSHROOM";
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 0px 20px 20px 0px;
  position: absolute;
  transform: scale(0);
  border-radius: 100px;
  width: 1%;
  height: 1%;
  font-size: 30pt;
  color: lawngreen;
  background-color: transparent;
  background-image: radial-gradient(#7cfc00 0.75px, transparent 0.75px),
    radial-gradient(#7cfc00 0.75px, #00000055 0.75px);
  background-size: 30px 30px;
  background-position: 0px 0px, 15px 15px;
  opacity: 0;
  z-index: 4;
  filter: contrast(0%);
  text-shadow: 1px 1px 3px black;
  mix-blend-mode: overlay;
  text-shadow: 1px 1px 5px black;
  transition: all 0.3s ease-in-out;
}

div > picture::after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  content: "";
  background: lawngreen;
  mix-blend-mode: color-burn;
  z-index: 3;
  transition: all 0.3s ease-in-out;
}

div:nth-child(1):hover {
  transform: rotateX(20deg) rotateY(10deg);
  box-shadow: lawngreen 0px 2px 4px, lawngreen 0px 7px 13px -3px;
  outline-offset: 60px;
  outline-style: dashed;
  transition: all 0.3s ease-in-out;
  cursor: pointer;
}

div:nth-child(1):hover::before,
div:nth-child(1):hover::after,
div:nth-child(1):hover > div {
  width: 100%;
  height: 100%;
  margin: -20px;
  outline-offset: 20px;
  transition: all 0.3s ease-in-out;
}

div:nth-child(1):hover > picture {
  transform: translateZ(70px) translateX(5px) translateY(10px);
  outline-offset: 0px;
  transition: all 0.3s ease-in-out;
}

div:nth-child(1):hover > picture::before {
  transform: scale(1);
  width: 100%;
  height: 100%;
  opacity: 1;
  border-radius: 0px;
  background-position: 30px 30px, 50px 50px;
  filter: contrast(100%);
  animation: dots 12s linear infinite;
  animation-direction: forwards;
}

div:nth-child(1):hover > picture::after {
  filter: saturate(200%) sepia(20%);
  transition: all 0.3s ease-in-out;
}