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CSS

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HTML

              
                <div class="notes">New & Improved! If there are multiple images, they work independently. So you can open a label in
  both images below.</div>

<div class="container">
  <div class="lg-container">
    <img class="lg-image"
      src="https://images.pexels.com/photos/162616/coffee-work-desk-mug-keyboard-162616.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" />

    <div style="top: 20%; left: 19.9%;" class="lg-hotspot lg-hotspot--top-left">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>This is the title</h4>
        <p>This is some text that goes in the label. It describes the item.</p>
      </div>
    </div>

    <div style="top: 25%; left: 88%;" class="lg-hotspot lg-hotspot--top-right">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>Keyboard</h4>
        <p>
          A keyboard has letters, and it can write letters. Let's say some more things about keyboards so the text wraps
          to multiple lines.
        </p>
      </div>
    </div>

    <div style="top: 15.5%; left: 66%;" class="lg-hotspot lg-hotspot--top-right">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>Envelopes</h4>
        <p>These can hold letters, bills, and junk mail.</p>
      </div>
    </div>

    <div style="top: 62%; left: 15%;" class="lg-hotspot lg-hotspot--bottom-left">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>Coffee</h4>
        <p>Yay coffee!</p>
      </div>
    </div>

    <div style="top: 85%; left: 73%;" class="lg-hotspot lg-hotspot--bottom-right">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <p>This is a label without a title.</p>
      </div>
    </div>
  </div>
  
  <div class="lg-container">
    <img class="lg-image"
      src="https://images.pexels.com/photos/39317/chihuahua-dog-puppy-cute-39317.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" />

    <div style="top: 21%; left: 93%;" class="lg-hotspot lg-hotspot--top-right">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>Fence</h4>
        <p>
          It's a fence to keep pupper safe.
        </p>
      </div>
    </div>

    <div style="top: 60%; left: 25%;" class="lg-hotspot lg-hotspot--top-left">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>Grass</h4>
        <p>Feels good on pupper's paws.</p>
      </div>
    </div>

    <div style="top: 13.5%; left: 58%;" class="lg-hotspot lg-hotspot--top-right">
      <div class="lg-hotspot__button"></div>
      <div class="lg-hotspot__label">
        <h4>Smol boi</h4>
        <p>
          Smol boi is a good pupper.
        </p>
      </div>
    </div>

  </div>
</div>
              
            
!

CSS

              
                @import url("https://fonts.googleapis.com/css?family=Open+Sans");

$buttonRadius: 24px;
$labelPaddingX: $buttonRadius * 1;
$labelBorderRadius: 2px;
$labelFade: 0.1s;
$colorButton: #ff6000;
$colorHoverAdd: #11174c;
$colorText: #333;
$colorHeadingBackground: #555;

body {
  margin: 0;
}

* {
  box-sizing: border-box;
}

.notes {
  margin: auto;
  padding: 2rem 1.2rem 0;
  max-width: 35rem;
  font-family: Open Sans, sans serif;
  text-align: center;
}

.container {
  width: 100%;
  padding: 1em;
  display: flex;
  flex-flow: column nowrap;
  justify-content: flex-start;
  align-items: center;
}

.lg-container {
  max-width: 550px;
  position: relative;
  margin: 1rem;
  padding: 0;
}

.lg-image {
  display: block;
  height: 100%;
  width: 100%;
  object-fit: scale-down;
}

.lg-hotspot {
  position: absolute;
  margin: 0;
  padding: 0;
  transform: translate(-50%, -50%);
  z-index: 0;
  &:hover,
  &:active {
    //  z-index: 999;
    .lg-hotspot__button {
      border-color: $colorButton + $colorHoverAdd;
      &:after {
        background-color: $colorButton + $colorHoverAdd;
      }
    }
  }
  &--selected {
    z-index: 999;
    .lg-hotspot__label {
      opacity: 1;
    }
  }
  &__button {
    height: $buttonRadius * 2;
    width: $buttonRadius * 2;
    padding: 0px;
    border-radius: 100%;
    border: 1px solid $colorButton;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    z-index: 999;
    animation: button-pulse 7s ease-in-out infinite;
    &:after {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      pointer-events: none;
      content: "";
      display: block;
      height: $buttonRadius * 0.7;
      width: $buttonRadius * 0.7;
      border-radius: 100%;
      border: 3px solid white;
      background-color: $colorButton;
      transition: border-color 1s linear;
    }
  }
  &__label {
    position: absolute;
    padding: 0 0 1.1em 0;
    width: 16em;
    max-width: 50vw;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    font-family: "Open Sans", sans-serif;
    font-size: 14.5px;
    line-height: 1.45em;
    z-index: -1;
    pointer-events: none;
    border-radius: $labelBorderRadius;
    user-select: none;
    opacity: 0;
    transition: all $labelFade linear;
    h4 {
      margin: 0;
      padding: 0.65em $labelPaddingX;
      background-color: $colorHeadingBackground;
      font-size: 1.1em;
      font-weight: normal;
      letter-spacing: 0.02em;
      color: white;
      border-radius: $labelBorderRadius $labelBorderRadius 0 0;
    }
    p {
      margin: 0;
      padding: 1.1em $labelPaddingX 0 $labelPaddingX;
      color: $colorText;
    }
  }
}

.lg-hotspot--top-left .lg-hotspot__label {
  top: $buttonRadius;
  left: $buttonRadius;
}

.lg-hotspot--top-right .lg-hotspot__label {
  top: $buttonRadius;
  right: $buttonRadius;
}

.lg-hotspot--bottom-right .lg-hotspot__label {
  right: $buttonRadius;
  bottom: $buttonRadius;
}

.lg-hotspot--bottom-left .lg-hotspot__label {
  bottom: $buttonRadius;
  left: $buttonRadius;
}

@keyframes button-pulse {
  0% {
    transform: scale(1, 1);
    opacity: 1;
  }
  40% {
    transform: scale(1.15, 1.15);
    opacity: 1;
  }
  100% {
    transform: scale(1, 1);
    opacity: 1;
  }
}

              
            
!

JS

              
                const selectHotspot = (e) => {
  const clickedHotspot = e.target.parentElement;
  const container = clickedHotspot.parentElement;
  
  // only include hotspots within same image to allow one open hotspot per image; change "container" to "document" to allow only one open hotspot for entire page:
  const hotspots = container.querySelectorAll(".lg-hotspot"); 
  hotspots.forEach(hotspot => {
    if (hotspot === clickedHotspot) {
      hotspot.classList.toggle("lg-hotspot--selected");
    } else {
      hotspot.classList.remove("lg-hotspot--selected");
    }
  });
}

(() => {
  const buttons = document.querySelectorAll(".lg-hotspot__button");
  buttons.forEach(button => {
    button.addEventListener("click", selectHotspot);
  });
})();

              
            
!
999px

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