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HTML 

              
                <!-- Blobfoxes: https://volpeon.ink/emojis/blobfox/ -->
<div id="blobfox-container">
	<input id="boop-input" type="checkbox" name="boop" aria-label="Boop the Blobfox">
	<img src="https://freeplay.floof.company/assets/blobfox/blobfoxfloofhappy.svg" alt="Blob Fox Floof Happy">
	<img src="https://freeplay.floof.company/assets/blobfox/blobfoxboopfloof.svg" alt="Blob Fox Floof Boop">
	<img src="https://freeplay.floof.company/assets/blobfox/blobfoxfloofcute.svg" alt="Blob Fox Floof Boop">
</div>
!

CSS 

              
                /* Center placement & color */
html { display: grid; height: 100%; place-items: center; background-color: #080011 }

#blobfox-container {
	/* Make sure that any absolutely positioned elements 
	inside is relative to this container */
	position: relative;
	width: 160px;
	height: 160px;
	/* glow effect */
	filter: drop-shadow(0 20px 80px #ff6b0080);
	/* hover effect */
	transition: transform .3s cubic-bezier(0,0.5,0,1.4), filter .2s;
	&:hover {
		transform: scale(1.025) translateY(-4px);
		filter: drop-shadow(0 20px 80px #ff6b0090);
	}
}

#blobfox-container img {
	/* Position the blobfoxes on top of each other */
	position: absolute;
	width: 100%;
	height: 100%;
	/* Prevent accidentally highlighting images from spam booping */
	user-select: none;
	/* Prevent from getting in way of clicking checkbox input */
	pointer-events: none;
	/* Add transitions for cross-fading blobfoxes (opacity)
	and pressing down (transform) */
	transition: opacity .1s linear, transform .4s cubic-bezier(0,0,0,2);

	/* Hide blobfox img's except from the first img */
	&:not(:first-of-type) {
		opacity: 0;
	}

	/* For the animation, creates a bouncy effect by starting
	it slightly scaled up, scaled from the bottom right */
	&:nth-of-type(2) {
		transform-origin: bottom right;
		transform: scale(1.1);
	}
}

#boop-input {
	/* Position the input where the blobfox's nose is */
	position: absolute;
	left: 20%;
  top: 43%;
  width: 30%;
  height: 25%;
	/* Let the user know they can boop */
	cursor: pointer;
	/* Remove the checkbox's browser styling, hiding it */
	appearance: none;
	
	/* When the input is clicked/"checked", 
	change to BlobFoxBoopHappy */
	&:checked {
		& ~ img {
			opacity: 0;
		}
		& ~ img:nth-of-type(3) {
			opacity: 1;
		}
	}
	
	/* During the click, change to BlobFoxBoop */
	&:active {
		/* Hide the user's cursor */
		cursor: none;
		
		/* Select all images after the input, and hide them */
		& ~ img {
			/* The img:nth-of-type(3) in the :checked is a more 
			specific selector, so we use !important to override that 
			(https://www.w3schools.com/css/css_specificity.asp) */
			opacity: 0 !important;
			/* Change the scale of the images for the animation */
			transform: scale(1.05);
		}
		/* Make the second img (the BlobFoxBoop) visible */
		& ~ img:nth-of-type(2) {
			/* Again, need !important to override 
			the !important before */
			opacity: 1 !important;
		}
	}
}
!

JS
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999px

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