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html

css

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html

css

:root {
  --color-light: rgb(203 213 225);
  --color-mid: rgb(51 65 85);
  --color-dark: rgb(71 85 105);
}
body {
  background-color: black;
  color: var(--color-light);
  font-family: sans-serif;
  font-family: "Inter", sans-serif;
  font-size: 14px;
}
body::before {
  content: "Hover or tap the icons.";
  font-size: 18px;
  position: absolute;
  left: 50%;
  top: calc(50% - 100px);
  transform: translate(-50%, -50%);
}
body::after {
  content: "Icons are borrowed from Heroicons.";
  position: absolute;
  bottom: 36px;
  right: 36px;
}
#wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  inset: 0;
}
header {
  width: 340px;
  padding: 0 16px;
  display: flex;
  border: 1px solid var(--color-dark);
  border-radius: 16px;
}
.iconDiv {
  height: 36px;
  width: 36px;
  margin-top: 20px;
  margin-bottom: 20px;
  margin-left: 4px;
  padding: 4px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  overflow: hidden;
  cursor: pointer;
  transition: width 300ms ease-in-out 0s, background-color 300ms linear 200ms;
}
.iconSVG {
  height: 36px;
  aspect-ratio: 1 / 1;
}
.iconDiv:hover,
.iconDiv:focus-visible {
  width: 142px;
  background-color: var(--color-mid);
  transition: width 300ms ease-in-out 0s, background-color 100ms linear 0s;
}
.iconDiv:focus-visible {
  outline: 1px solid var(--color-mid);
  outline-offset: 4px;
}
.iconDiv:active {
  opacity: 0.9;
}
.iconDiv::after {
  content: attr(tooltip);
  margin-left: 12px;
  animation: fadeIn 600ms linear forwards;
}
.spacer {
  flex-grow: 1;
}
.divider {
  height: 36px;
  width: 1px;
  margin: 24px 18px;
  background-color: var(--color-dark);
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

JavaScript

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