JSFiddle - React, Tailwind, and code Playground

by terby

HTML

<div class="buttons">
  <h1>Simple hover effects with <code>box-shadow</code></h1>
  <button class="fill">Fill In</button>
  <button class="pulse">Pulse</button>
  <button class="close">Close</button>
  <button class="raise">Raise</button>
  <button class="up">Fill Up</button>
  <button class="slide">Slide</button>
  <button class="offset">Offset</button>
</div>

CSS

/* https://developer.mozilla.org/en/docs/Web/CSS/box-shadow box-shadow: [inset?] [top] [left] [blur] [size] [color];
 Tips: - We're setting all the blurs to 0 since we want a solid fill. - Add the inset keyword so the box-shadow is on the inside of the element - Animating the inset shadow on hover looks like the element is filling in from whatever side you specify ([top] and [left] accept negative values to become [bottom] and [right]) - Multiple shadows can be stacked - If you're animating multiple shadows, be sure to keep the same number of shadows so the animation is smooth. Otherwise, you'll get something choppy. */
 .fill:hover, .fill:focus {
	 box-shadow: inset 0 0 0 2em var(--hover);
}
 .pulse:hover, .pulse:focus {
	 animation: pulse 1s;
	 box-shadow: 0 0 0 2em rgba(255, 255, 255, 0);
}
 @keyframes pulse {
	 0% {
		 box-shadow: 0 0 0 0 var(--hover);
	}
}
 .close:hover, .close:focus {
	 box-shadow: inset -3.5em 0 0 0 var(--hover), inset 3.5em 0 0 0 var(--hover);
}
 .raise:hover, .raise:focus {
	 box-shadow: 0 0.5em 0.5em -0.4em var(--hover);
	 transform: translateY(-0.25em);
}
 .up:hover, .up:focus {
	 box-shadow: inset 0 -3.25em 0 0 var(--hover);
}
 .slide:hover, .slide:focus {
	 box-shadow: inset 6.5em 0 0 0 var(--hover);
}
 .offset {
	 box-shadow: 0.3em 0.3em 0 0 var(--color), inset 0.3em 0.3em 0 0 var(--color);
}
 .offset:hover, .offset:focus {
	 box-shadow: 0 0 0 0 var(--hover), inset 6em 3.5em 0 0 var(--hover);
}
 .fill {
	 --color: #a972cb;
	 --hover: #cb72aa;
}
 .pulse {
	 --color: #ef6eae;
	 --hover: #ef8f6e;
}
 .close {
	 --color: #ff7f82;
	 --hover: #ffdc7f;
}
 .raise {
	 --color: #ffa260;
	 --hover: #e5ff60;
}
 .up {
	 --color: #e4cb58;
	 --hover: #94e458;
}
 .slide {
	 --color: #8fc866;
	 --hover: #66c887;
}
 .offset {
	 --color: #19bc8b;
	 --hover: #1973bc;
}
 button {
	 color: var(--color);
	 transition: 0.25s;
}
 button:hover, button:focus {
	 border-color: var(--hover);
	 color: #fff;
}
 body {
	 color: #fff;
	 background: #17181c;
	 font:...