Two pure CSS methods to achieve the pop-out effect of hover images

Realization principle

The main graphics are composed of two elements: the background and the foreground. In the following sample code, the background element is figure::before , and the foreground element is figure img . When the mouse is hovered to the figure element, the background element has a larger effect and the foreground The element has the effect of getting bigger and moving up, thereby visually achieving a pop-up effect.

Background elements figure::before

Foreground elements figure img

1. Use overflow: hidden method

Body element html structure consists of a figure element package img elements configured:

<figure>
  <img src='./man.png' alt='Irma'>
</figure>

--hov and css are set in --not-hov to control the amplification and displacement effects of the hover figure add overflow: hidden to the 06078cc82096fe element, and set padding-top: 5% for foreground elements to not be truncated when they exceed background elements (not necessary: and use the clamp() function to dynamically set border-radius to dynamically respond to page zoom)

figure {
  --hov: 0;
  --not-hov: calc(1 - var(--hov));
  display: grid;
  place-self: center;
  margin: 0;
  padding-top: 5%;
  transform: scale(calc(1 - .1*var(--not-hov)));
  overflow: hidden;
  border-radius: 0 0 clamp(4em, 20vw, 15em) clamp(4em, 20vw, 15em);
}
figure::before, figure img {
  grid-area: 1/1;
  place-self: end center;
}
figure::before {
  content: "";
  padding: clamp(4em, 20vw, 15em);
  border-radius: 50%;
  background: url('./bg.png') 50%/cover;
}
figure:hover {
  --hov: 1;
}
img {
  width: calc(2*clamp(4em, 20vw, 15em));
  border-radius: clamp(4em, 20vw, 15em);
  transform: translateY(calc((1 - var(--hov))*10%)) scale(calc(1.25 + .05*var(--hov)));
}

2. Use clip-path: inset() method

<figure>
  <img src='./man.png' alt='Irma'>
</figure>

The style is basically the same as the first one, using clip-path to capture the circular background area.

figure {
  --hov: 0;
  --not-hov: calc(1 - var(--hov));
  display: grid;
  place-self: center;
  margin: 0;
  padding-top: 5%;
  transform: scale(calc(1 - .1*var(--not-hov)));
  clip-path: inset(0 round 0 0 clamp(4em, 20vw, 15em) clamp(4em, 20vw, 15em));
}
figure::before, figure img {
  grid-area: 1/1;
  place-self: end center;
}
figure::before {
  content: "";
  padding: clamp(4em, 20vw, 15em);
  border-radius: 50%;
  background: url('./bg.png') 50%/cover;
}
figure:hover {
  --hov: 1;
}
figure:hover::before {
  box-shadow: 1px 1px 10px rgba(0, 0, 0, .3);
}
img {
  width: calc(2*clamp(4em, 20vw, 15em));
  border-radius: clamp(4em, 20vw, 15em);
  transform: translateY(calc((1 - var(--hov))*10%)) scale(calc(1.25 + .05*var(--hov)));
}

Complete example

  <h2>使用overflow: hidden方式</h2>
  <figure>
    <img src='./man.png' alt='Irma'>
  </figure>
  <h2>使用clip-path: path()方式</h2>
  <figure>
    <img src='./man.png' alt='Irma'>
  </figure>

body {
  display: grid;
  background: #FDFC47;
  background: -webkit-linear-gradient(to right, #24FE41, #FDFC47);
  background: linear-gradient(to right, #24FE41, #FDFC47);
}
figure {
  --hov: 0;
  --not-hov: calc(1 - var(--hov));
  display: grid;
  place-self: center;
  margin: 0;
  padding-top: 5%;
  transform: scale(calc(1 - .1*var(--not-hov)));
}
figure:nth-of-type(1) {
  overflow: hidden;
  border-radius: 0 0 clamp(4em, 20vw, 15em) clamp(4em, 20vw, 15em);
}
figure:nth-of-type(2) {
  clip-path: inset(0 round 0 0 clamp(4em, 20vw, 15em) clamp(4em, 20vw, 15em));
}
figure, figure img {
  transition: transform 0.2s ease-in-out;
}
figure::before, figure img {
  grid-area: 1/1;
  place-self: end center;
}
figure::before {
  padding: clamp(4em, 20vw, 15em);
  border-radius: 50%;
  background: url('./bg.png') 50%/cover;
  content: "";
  transition: .25s linear;
}
figure:hover {
  --hov: 1;
}
figure:hover::before {
  box-shadow: 1px 1px 10px rgba(0, 0, 0, .3);
}
img {
  width: calc(2*clamp(4em, 20vw, 15em));
  border-radius: clamp(4em, 20vw, 15em);
  transform: translateY(calc((1 - var(--hov))*10%)) scale(calc(1.25 + .05*var(--hov)));
}