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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div class="button-group">
  <p>Use a quicker transition on <code>:hover</code> for a more dynamic feel.</p>
  <button class="standard-timing">Standard</button>
  <button class="dynamic-timing">Dynamic</button>
  <div class="button-grid">
    <button class="dynamic-timing">1</button>
    <button class="dynamic-timing">2</button>
    <button class="dynamic-timing">3</button>
    <button class="dynamic-timing">4</button>
    <button class="dynamic-timing">5</button>
    <button class="dynamic-timing">6</button>
    <button class="dynamic-timing">7</button>
    <button class="dynamic-timing">8</button>
    <button class="dynamic-timing">9</button>
    <button class="dynamic-timing">10</button>
    <button class="dynamic-timing">11</button>
    <button class="dynamic-timing">12</button>
    <button class="dynamic-timing">13</button>
    <button class="dynamic-timing">14</button>
    <button class="dynamic-timing">15</button>
    <button class="dynamic-timing">16</button>
    <button class="dynamic-timing">17</button>
    <button class="dynamic-timing">18</button>
    <button class="dynamic-timing">19</button>
    <button class="dynamic-timing">20</button>
  </div>
</div>
<div class="button-group">
  <p>Combine transitions and animations to enable different in/out effects.</p>
  <button class="slide-up">Up</button>
  <button class="slide-down">Down</button>
  <button class="slide-in-out">In/Out</button>
</div>
<div class="button-group">
  <p>Transition pseudo elements for creative fills, and use delays to transition different properties.</p>
  <button class="fill-in">Fill In</button>
  <button class="fill-fade">Fill In + Fade Out</button>
</div>
            
          
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              $blue: hsl(200, 100%, 50%);

/* Layout */

html {
  text-align: center;
}

div.button-group {
  margin-bottom: 3em;
}

p {
  font-size: 1.25em;
}


/* Base button styles */

button {
  position: relative;
  z-index: 1;
  background: $blue;
  color: white;
  font-size: 2em;
  padding: 0.5em 1em;
  margin: 0.5em;
  border: 1px solid $blue;
  cursor: pointer;

  &:hover {
    background: white;
    color: $blue;
  }
}

/* :hover timing */

button.standard-timing {
  transition: 600ms;
}

button.dynamic-timing {
  // Default transition
  transition: 600ms;
  
  // Shorter duration on :hover
  &:hover {
    transition: 200ms;
  }
  
  /* Smaller buttons for grid example */

}

.button-grid {
  display: inline-block;
  margin-top: 1em;
  
  button.dynamic-timing {
    border: 0;
    display: block;
    float: left;
    font-size: 1em;
    margin: 0;
    padding: 0.3em 0.1em;
    width: 2em;
    transition: 1200ms;
    
    &:hover {
      transition: 50ms;
    }
  }
}

/* Slide effect */

button.slide {
  // Background is a 2x height gradient
  background: linear-gradient($blue, $blue 50%, white 50%, white);
  background-size: 100% 200%;
}

button.slide-up {
  @extend button.slide;
  background-position: 50% 0%;
  transition: 300ms;
  
  // Move background up on :hover
  &:hover {
    background-position: 50% 100%;
  }
}

button.slide-down {
  @extend button.slide;
  background-position: 50% 0%;
  transition: 300ms;
  
  // Move background down on :hover
  &:hover {
    background-position: 50% -100%;
  }
}

/* Animation on :hover */

button.slide-in-out {
  // Inherits values from .slide-down
  @extend button.slide-down;
  
  // On :hover, play the animation
  &:hover {
    animation: slide-up-in 300ms;
  }
}

/* Slide up keyframes */

@keyframes slide-up-in {
  0% {
    // Start from bottom position
    background-position: 50% 0%;
  }
  100% {
    // End at top, which appears the same as .slide-down hover state
    background-position: 50% 100%;
  }
}

/* Pseudo element fill */

button.fill {
  position: relative;
  z-index: 1;
  transform: translateZ(0);
  transition: 300ms;
  
  /* :before element fill */
  &:before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: -1;
  }
}

button.fill-in {
  @extend button.fill;

  /* "Out" styles */
  &:before {
    opacity: 0;
    background: white;
    transform: scale(0.01);
    // When transitioning out, keep opacity at 1 for most of the duration with 250ms delay
    transition: transform 300ms, opacity 50ms 250ms;
  }

  &:hover {
    background: $blue;
    
    /* "In" styles */
    &:before {
      opacity: 1;
      transform: scale(1);
      // Fade in with shorter duration to show more of the transform
      transition: transform 300ms, opacity 50ms;
    }
  }
}

button.fill-fade {
  // Inherits values from .fill-in
  @extend button.fill-in;
  
  /* "Out" styles */
  &:before {
    // Keep transform property in hover state until opacity is finished transitioning with 300ms delay
    transition: transform 0ms 300ms, opacity 300ms;
  }
}
            
          
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