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HTML

              
                <header>
  <h1>Snazzy UI Buttons.</h1>
  <p>Hover effects are created using linear-gradient and box shadow. Also, using rem's and em's, the text and button size are based off the root font size.
  </p>
</header>
<div class="buttons">
<button class="btn btn-one">Button</button>
  <button class="btn btn-two square">Button</button>
  <button class="btn btn-three round">Button</button>
  <button class="btn btn-four">Button</button>
  <button class="btn btn-five round">Button</button>
</div>
              
            
!

CSS

              
                // Import font
@import 'https://fonts.googleapis.com/css?family=Lato';

// Colours
$bodybg: #674172;
$darkgrey: #333;
$whitegrey: #ececec;
$yellow: #f1c40f;
$turquoise: #1abc9c;
$red: #e74c3c;
$blue: #3498db;
$orange: #e67e22;

// Reset, base & layout
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  font:{
    family: lato;
    size: 12px;
  }
  background-color: $bodybg;
}
// Media queries to change body font size
// This then triggers other units in the doc to change size of elements
@media screen and (min-width:656px){
  html, body {
    font-size: 13px;
  }
}
@media screen and (min-width:820px){
  html, body{
    font-size: 14px;
  }
}
@media screen and (min-width:1000px){
  html, body {
    font-size: 16px;
  }
}
@media screen and (min-width:1200px){
  html, body {
    font-size: 18px;
  }
}
header {
  color: $whitegrey;
  text-align: center;
  margin-top: 26vh;
  h1 {
    letter-spacing: 3px;
    font-size: 4.5rem;
  }
  p {
    font-size: 1.1rem;
    line-height: 1.5rem;
    margin: 5vh auto;
    max-width: 62vw;
  }
}

.buttons {
  display: flex;
  justify-content: space-around;
}
// Buttons
.btn {
  font-family: 'lato';
  font-size: 0.75rem;
  background: none;
  border: 0.175em solid $whitegrey;
  padding: 1.4em 3.3em;
  color: $whitegrey;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  border-radius: 0.5em;
  cursor: pointer;
  &:focus {
    outline: none;
  }
}
.round {
  border-radius: 24px;
}
.square {
  border-radius: 0px;
}
// Button 1
.btn-one {
  border-color: $yellow;
  color: $darkgrey;
  box-shadow: 0 0 0 0 $yellow,
    inset 0 0 200px 28px $yellow;
  transition: box-shadow 300ms ease-in-out, color 300ms ease-in-out;
  &:hover {
  box-shadow: 0 0 40px 0 $yellow,
    inset 0 0 25px 0 $yellow;
  color: $yellow;
  }
}
// Button 2
.btn-two {
  color: $blue;
  border-color: $blue;
  box-shadow:  0 0 0 0 $blue, inset 0 0 0 0 $blue;
  transition: box-shadow 300ms ease-in-out, color 300ms ease-in-out;
  &:hover {
    color: $whitegrey;
    box-shadow: 0 0 40px 0 $blue, inset 0 0 200px 5px $blue;
  }
}
// Button 3
.btn-three {
  border-color: $turquoise;
  color: $whitegrey;
  background:{
    image: linear-gradient(45deg, $turquoise, transparent);
    position: 75%;
    size: 200%;
  }
  transition: background 300ms ease-in-out;
  &:hover {
    background:{
      position: 0%;
    }
  }
}
// Button 4
.btn-four {
  border-color: $red;
  color: $red;
  background:{
    image: linear-gradient(45deg, transparent 50%, $red 50%);
    position: 25%;
    size: 400%;
  }
  transition: background 500ms ease-in-out, color 500ms ease-in-out;
  &:hover {
    color: $whitegrey;
    background:{
      position: 100%;
    }
  }
}
// Button 5
.btn-five{
  border-color: $orange;
  background:{
    image: linear-gradient(0deg, transparent 50%, $orange 50%);
    position: 0 -100%;
    size: 500%;
  }
  transition: background 500ms ease-in-out, color 500ms ease-in-out, box-shadow 500ms ease-in-out;
  &:hover {
    color: $orange;
    background:{
      position: 0 -50%;
    }
    box-shadow: 0 0 40px 0 $orange;
  }
}
              
            
!

JS

              
                
              
            
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999px

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