fox.scss

@import 'https://fonts.googleapis.com/css?family=Lato:100,300,400,700';

$color-fur-edge: #BFB48C;
$color-eye: #260F02;
$color-body: #C49152;
$color-body-dark: #9D7442;
$color-body-light: #cca069;
$color-ear: #6a3c1c;
$color-fur: #EFE1AF;
$easing: cubic-bezier(0.645, 0.045, 0.355, 1);
$total-kf: 13;
$duration: 10s;

$k-bounce-down: (0, 1, 2, 3, 4,
    6, 7, 8, 9,
    $total-kf);
$k-bounce-up: (0.5, 1.5, 2.5, 3.5,
    6.5, 7.5, 8.5, 9.5,);
$k-attack-prep: 10;
$kap: $k-attack-prep; // I'm being lazy
$k-attack: (10.3, $total-kf - 1);

$kf-head: (
  $k-bounce-down: translateY(2%),
  $k-bounce-up: translateY(0),
  4.5: translateY(2%) rotate(-3deg),
  5: translateY(-5%) rotate(7deg),
  $k-attack-prep: translateY(7%) rotate(-3deg),
  ($k-attack-prep + 1): translateY(-7%) rotate(3deg),
);

$kf-head-shadow: (
  $k-bounce-down: translateY(-2%),
  $k-bounce-up: translateY(1%),
  4.5: translateY(-5%),
  5: translateY(5%),
  $k-attack-prep: translateY(-4%),
  ($k-attack-prep + 1): translateY(10%) scale(0.9)
);

$kf-eyes: (
  $k-bounce-down: rotateX(-7deg) translateZ(10px),
  $k-bounce-up: rotateX(7deg) translateZ(10px),
  $k-attack-prep: translateY(5%) rotateX(-20deg) translateZ(10px),
  ($k-attack-prep + 1): rotateX(20deg) translateZ(10px),
);

$kf-nose: (
  $k-bounce-down: translateY(30%),
  $k-bounce-up: translateY(-20%),
  $k-attack-prep: translateY(70%),
  ($k-attack-prep + 1): translateY(-60%),
);

$kf-mouth-move: (
  $k-bounce-down: translateY(15%),
  $k-bounce-up: translateY(-5%),
  
  $k-attack-prep: translateY(30%),
  ($k-attack-prep + 1): translateY(-10%),
);

$kf-body: (
  $k-bounce-down: translateY(1%),
  $k-bounce-up: translateY(0),
  4.5: translateY(4%),
  5: translateY(0),
  $k-attack-prep: translateY(3%),
  $k-attack: translateY(-5%),
);

$kf-eyelid: (
  (0,
    3, 3.2,
    10,
    $total-kf - 0.6,
  ): translateY(-120%) rotate(-30deg) ,
  (
    3.05, 3.18,
    10.05,
    $total-kf - 0.8,
  ): translateY(0) rotate(0) ,
  $k-attack: translateY(-85%) rotate(30deg),
);

$kf-mouth: (
  (0, $total-kf - 0.9): (
    width: 12%,
    height: 6%,
    bottom: 13%,
    left: 33%,
    border-radius: 50%,
    box-shadow: 0 -2px $color-eye,
    border: none,
    background: transparent,
  ),
  $k-attack: (
    height: 10%,
    background: #B37B7E,
    border-top-left-radius: 50% 60%,
    border-top-right-radius: 50% 60%,
    border-bottom-left-radius: 50% 40%,
    border-bottom-right-radius: 50% 40%,
    box-shadow: inset 0 5px $color-eye,
    border: 2px solid $color-eye,
  ),
);

$kf-mouth-side: (
  (0, $total-kf - 0.9): (opacity: 1),
  10.3: (opacity: 0),
);

$kf-leg: (
  $k-bounce-down: rotate(-12deg),
  $k-bounce-up: rotate(-6deg),
  4.5: rotate(-16deg),
  5: rotate(9deg),
  $k-attack-prep: translateY(-10%) rotate(-18deg),
  $k-attack: translateY(5%) rotate(0),
);

$kf-leg-inner: (
  $k-bounce-down: rotate(28deg),
  $k-bounce-up: rotate(16deg),
  4.5: rotate(40deg),
  5: rotate(-10deg),
  $k-attack-prep: rotate(32deg),
  $k-attack: rotate(0),
);

$kf-paw-inner: (
  $k-bounce-down: rotate(-16deg),
  $k-bounce-up: rotate(-10deg),
  4.5: rotate(-20deg),
  5: rotate(0deg),
  $k-attack-prep: rotate(-14deg),
  $k-attack: rotate(0),
);

$kf-ear: (
  $k-bounce-up: rotateX(-20deg) rotate(-15deg),
  $k-bounce-down: rotateX(20deg) rotate(-5deg),
  
  (4.7,4.9,5.1,5.3): rotate(-20deg),
  (4.8,5.0,5.2,5.6): rotate(-10deg),
  
  $k-attack-prep: rotateX(20deg) rotate(-5deg),
  ($kap+0.4, $kap+0.8, $kap+1.2, $kap+1.6, $kap+2.0): rotateX(-30deg) rotate(-30deg),
  ($kap+0.6, $kap+1.0, $kap+1.4, $kap+1.8, $kap+2.2): rotateX(-20deg) rotate(-20deg),
);

$kf-tail: (
  all: scale(0.9),
  $k-bounce-down: rotate(-5deg),
  $k-bounce-up: rotate(5deg),
  
  4.4: rotate(10deg),
  (4.6, 5, 5.4): rotate(-2deg),
  (4.8, 5.2, 5.6): rotate(4deg),
  $k-attack-prep: rotate(-7deg),
  ($k-attack-prep + 1): rotate(15deg),
);

$kf-tail-end: (
  all: scale(0.9),
  $k-bounce-down: rotate(-12deg),
  $k-bounce-up: rotate(9deg),
  
  4.4: rotate(10deg),
  (4.6, 5, 5.4): rotate(-4deg),
  (4.8, 5.2, 5.6): rotate(12deg),
  $k-attack-prep: rotate(7deg),
  ($kap+0.6, $kap + 1, $kap+1.4, $kap+1.8): rotate(-10deg),  
  ($kap+0.8, $kap + 1.2, $kap+1.6, $kap+2.0): rotate(2deg),  
);

$kf-chest: (
  (0, 4, $total-kf): translateY(0),
  4.5: rotate(-2deg) translateY(2%) ,
  5: rotate(2deg) translateY(-2%) ,
  ($k-attack-prep - 1): translateY(0),
  $k-attack-prep: translateY(2%),
  ($k-attack-prep + 1): translateY(0),
);

$kf-fur-center: (
  $k-bounce-down: translateY(0),
  $k-bounce-up: translateY(2%),
);

$kf-fur-center-patch-left: (
  $k-bounce-down: rotate(65deg) skewX(15deg),
  $k-bounce-up: rotate(60deg) skewX(15deg),
);

$kf-fur-center-patch-right: (
  $k-bounce-down: rotate(35deg) skewX(15deg),
  $k-bounce-up: rotate(30deg) skewX(15deg),
);

$kf-fur-right: (
  $k-bounce-down: translateY(0),
  $k-bounce-up: translateY(2%),
);

$kf-fur-right-patch: (
  $k-bounce-down: translateY(0) rotate(50deg),
  $k-bounce-up: translateY(2%) rotate(56deg),
);

@mixin effect($name, $kf) {
  $all: '';
  @keyframes #{$name} {
    @each $intervals, $transform in $kf {
      @each $interval in $intervals {
        @if ($interval == 'all') {
          $all: $transform;
        } @else {       
          #{percentage($interval/$total-kf)} {
            @if type-of($transform) == 'map' {
              @each $key, $val in $transform {
                #{$key}: $val;
              }
            } @else {
              transform: unquote($all) $transform;
            }
          }
        }
      }
    }
  }
  $all: '';
}

@function a($name, $delay: 0s) {
  @return $name $duration $delay $easing both infinite;
}

@include effect(head, $kf-head);
@include effect(head-shadow, $kf-head-shadow);
@include effect(eyes, $kf-eyes);
@include effect(eyelid, $kf-eyelid);
@include effect(nose, $kf-nose);
@include effect(mouth-move, $kf-mouth-move);

@include effect(mouth, $kf-mouth);
@include effect(mouth-side, $kf-mouth-side);
@include effect(ear, $kf-ear);
@include effect(tail, $kf-tail);
@include effect(tail-end, $kf-tail-end);
@include effect(chest, $kf-chest);
@include effect(fur-center, $kf-fur-center);
@include effect(fur-center-patch-left, $kf-fur-center-patch-left);
@include effect(fur-center-patch-right, $kf-fur-center-patch-right);
@include effect(fur-right, $kf-fur-right);
@include effect(fur-right-patch, $kf-fur-right-patch);
@include effect(body, $kf-body);
@include effect(leg, $kf-leg);
@include effect(leg-inner, $kf-leg-inner);
@include effect(paw-inner, $kf-paw-inner);

.eevee {
  height: 325px;
  width: 410px;
  
  @media (max-width: 600px) {
    transform: scale(0.8);
  }
  
  @media (max-width: 300px) {
    transform: scale(0.5);
  }
  
  * {
    position: absolute;
  }
}

.body {
  animation: a(body);
  height: 100px;
  position: absolute;
  width: 125px;
  top: 164px;
  left: 140px;
  background: $color-body;
  border-top-right-radius: 30%;
  border-bottom-right-radius: 50%;
  border-bottom-left-radius: 70%;
  box-shadow:
    inset -15px 0 0 $color-body-dark;
}

.chest {
  animation: a(chest, 0.05s);
  height: 110%;
  width: 130px;
  left: -30px;
  z-index: 1;
}

.fur {
  height: 80px;
  width: 80px;
  top: 0;
  border-radius: 50%;
  background: linear-gradient(to top,
    $color-fur,
    white 40%,
    white 50%,
    $color-fur 75%
  );
  
  &:first-child {
    animation: a(fur-center, 0.1s);
    height: 110px;
    width: 110px;
    left: calc(50% - 55px);
    z-index: 1;
    box-shadow:
      inset 0 0 0 2px rgba(black, 0.2),
      3px 0 15px rgba(black, 0.2);
    
    > .patch {
      height: 50%;
      width: 50%;
      left: 50% - 25%;
      transform-style: none;
      bottom: 8%;

      &:before {
        animation: a(fur-center-patch-left);
        left: 25%;
        top: 0;
        transform: rotate(65deg) skewX(15deg);
        box-shadow:
          2px 0 $color-fur-edge;
        background: linear-gradient(-45deg,
          $color-fur-edge,
          $color-fur 9%,
          transparent 20%);
        border-top-right-radius: 60%;
        border-bottom-right-radius: 8%;
      }
      
      &:after {
        animation: a(fur-center-patch-right, 0.07s);
        left: initial;
        right: 25%;
        top: 0;
        transform: rotate(35deg) skewX(15deg);
        box-shadow:
          0 3px $color-fur-edge;
        background: linear-gradient(-37deg,
          $color-fur-edge,
          $color-fur 9%,
          transparent 20%);
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 60%;
        border-bottom-right-radius: 8%;
      }
    }
  }
  
  &:nth-child(2) {
    left: -3px;
  }
  
  &:nth-child(3) {
    animation: a(fur-right, 0.15s);
    right: -20px;
  }
  
  > .patch {
    &:before, &:after {
      content: '';
      display: block;
      position: absolute;
      width: 100%;
      height: 100%;
      border-bottom-left-radius: 100%;
    }
    
    &:before {
      background: linear-gradient(-30deg,
        $color-fur-edge,
        $color-fur 6%,
        white 55%,
        transparent
      );
    }
    
    &:after {
      background: linear-gradient(-30deg,
        $color-fur-edge,
        $color-fur 6%,
        white 55%,
        transparent
      );
    }
  }
  
  &:not(:first-child) > .patch {
    height: 35%;
    width: 35%;
    bottom: 10%;
    left: 30%;
    
    &:before, &:after {
      animation: a(fur-right-patch);
      top: -15%;
      left: 110%;
      transform-origin: top left;
      box-shadow:
        2px 0 $color-fur-edge;
      border-top-right-radius: 75%;
      border-bottom-right-radius: 10%;
    }
    
    &:before {
      left: 150%;
      top: -25%;
    }
    
    &:after {
      animation-delay: 0.1s;
      left: 100%;
      top: 0%;
    }
  }
}

.head {
  height: 149px;
  width: 144px;
  top: -110px;
  left: -35px;
  z-index: 10;
  animation: a(head);
  transform-style: preserve-3d;
  perspective: 1000px;

  &:before {
    content: '';
    position: absolute;
    display: block;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    
  }
  
  &:after {
    content: '';
    position: absolute;
    display: block;
    height: 20%;
    width: 20%;
    background: green;
    transform: skewX(30deg) rotate(40deg);
    left: 50%;
    top: -2%;
    background: $color-body;
    box-shadow:
      -15px 8px #ca9d65,
      -25px 22px #cca069,
      -35px 50px #cda36f
    ;
    z-index: -1;
  }
}

.face {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: linear-gradient(to top left,
    $color-body-dark,
    $color-body 60%,
    $color-body 70%,
    lighten($color-body, 15%) 100%
  );
  
  &, &:before {
    border-top-left-radius: 40% 50%;
    border-top-right-radius: 40% 50%;
    border-bottom-left-radius: 50% 30%;
    border-bottom-right-radius: 50% 30%;
  }
  
  &:before {
    animation: a(head-shadow);
    content: '';
    display: block;
    position: absolute;
    height: 100%;
    width: 100%;
    background: radial-gradient(farthest-side,
      rgba(black, 0.6),
      transparent
    );
    z-index: -1;
    top: 20%;
    left: 0%;
  }
}

.ears {
  width: 100%;
  height: 54px;
  z-index: -2;
}

.ear {
  width: 160px;
  height: 70px;
  left: 50%;
  bottom: 10%;
  transform-origin: bottom left;
  transform: translateX(40px);
  
  &:before, &:after {
    animation: a(ear, 0.1s);
    animation-delay: 50ms;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: skewX(-25deg) skewY(5deg);
    background: radial-gradient(farthest-side, $color-ear, darken($color-ear, 4%));
    transform-origin: bottom left;
    border: 12px solid $color-eye;
    border-top-left-radius: 100%;
    border-bottom-right-radius: 100%;
  }
  
  &:after {
    border: 8px solid $color-body-dark;
    background: transparent;
  }
  
  + .ear {
    transform: translateX(-40px) rotateY(180deg);
  }
  
  > .lobe {
    height: 20%;
    width: 20%;
    background: $color-body-dark;
    bottom: 25%;
    left: -5%;
    transform: skewX(-50deg);
    border-top-right-radius: 15%;
    box-shadow: 9px 6px 0 $color-body-dark;
  }
}

.eyes {
  width: 77%;
  height: 33%;
  left: 5%;
  top: 35%;
  animation: a(eyes);
}

.eye {
  height: 100%;
  width: 28%;
  border-top-left-radius: 50% 65%;
  border-top-right-radius: 50% 65%;
  border-bottom-left-radius: 50% 35%;
  border-bottom-right-radius: 50% 35%;
  background-color: $color-eye;
  box-shadow:
    inset 0 0 0 3px $color-eye;
  background-image:
    radial-gradient(ellipse 5px 10px at 50% 65%,
      $color-eye 0%,
      $color-eye 99%,
      transparent 100%),
    radial-gradient(ellipse 10px 20px at 50% 90%,
      #955D27 0%,
      #955D27 99%,
      transparent 100%),
    radial-gradient(ellipse 4px 6px at 55% 20%,
      white 0%,
      white 99%,
      transparent 100%)
    ;
  
  &:last-child {
    right: 10%;
    transform: rotateY(180deg);
    
    // &:before {
    //   border-left: 3px solid $color-eye;
    //   border-right: 1px solid transparent;
    //   border-top: 1px solid transparent;
    //   border-bottom: 1px solid transparent;
    //   transform: rotate(38deg);
    //   left: 2px;
    // }
  }
  
  &:before {
    content: '';
    display: block;
    position: absolute;
    height: 30%;
    width: 30%;
    background: transparent;
    border-radius: 50%;
    border-right: 3px solid $color-eye;
    border-left: 1px solid transparent;
    border-top: 1px solid transparent;
    border-bottom: 1px solid transparent;
    z-index: -1;
    transform: rotate(-38deg);
    top: -4px;
    left: initial;
    right: 2px;
    opacity: 0.6;
    z-index: 1;
  }
  
  > .eyelid {
    height: 102%;
    width: 102%;
    left: -1%;
    top: -1%;
    overflow: hidden;
    
    &:before {
      animation: a(eyelid);
      content: '';
      position: absolute;
      display: block;
      top: 0;
      left: 0;
      height: 100%;
      width: 100%;
      background: $color-body;
      border-bottom: 3px solid $color-eye;
      transform-origin: center bottom;
      transform: translateY(-100%);
      border-radius: 50% 50% 15% 15%;
    }
  }
}

.mouth {
  animation: a(mouth), a(mouth-move);
  animation-timing-function: step-end, $easing;
  animation-fill-mode: none;
  width: 12%;
  height: 6%;
  bottom: 13%;
  left: 33%;
  border-radius: 50%;
  box-shadow: 0 -2px $color-eye;
  
  &:before, &:after {
    animation: a(mouth-side);
    animation-timing-function: step-end;
    content: '';
    display: block;
    position: absolute;
    width: 60%;
    height: 100%;
    border-radius: 50%;
    bottom: 53%;
    border-bottom: 2px solid $color-eye;
  }
  
  &:before {
    right: 87%;
  }
  
  &:after {
    left: 87%;
  }
}

.nose {
  animation: a(nose);
  width: 6%;
  height: 4%;
  background: $color-eye;
  border-bottom-left-radius: 50% 65%;
  border-bottom-right-radius: 50% 65%;
  border-top-left-radius: 50% 35%;
  border-top-right-radius: 50% 35%;
  bottom: 26%;
  left: 35%;
}

.tail {
  height: 120px;
  width: 120px;
  z-index: -1;
  animation: a(tail);
  
  &:before, &:after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
  
  &:after {
    background: $color-body;
    border-radius: 50%;
    transform: rotate(-135deg);
  }
  
  .body > & {
    z-index: -2;
    right: -40px;
    top: -70px;
    
    &:after {    
      background: linear-gradient(to bottom right,
        $color-body-dark,
        $color-body-dark 20%,
        $color-body,
        $color-body);
    }
  }
  
  .tail {
    top: -35px;
    transform-origin: center bottom;
    transform: scale(0.85);
  }
  
  > .tail .tail {
    z-index: 1
  }
  
  &.-end {
    top: -60px;
    
    &:after {
      background: $color-fur;
      background: linear-gradient(to bottom right, $color-fur, white);
      // box-shadow: 0 0 0 6px $color-fur;
      border-radius: initial;
      border-bottom-left-radius: 100% 50%;
      border-top-right-radius: 50% 100%;
      border-top-left-radius: 50%;
    }
    
    &:before {
      content: '';
      display: block;
      position: absolute;
      background: $color-body;
      height: 40%;
      width: 40%;
      z-index: 1;
      border-radius: 50% 50% 0 0;
      top: initial;
      bottom: -15%;
      left: 30%;
      box-shadow:
        -20px -5px $color-body,
        20px -5px $color-body;
    }
  }
  
  > .tail > .tail * {
    animation: a(tail-end);
  }
}

.legs {
  animation: a(legs);
  top: 70%;
  width: 100%;
  height: 100%;
}

@mixin bend-leg($deg) {
  > .inner-leg {
    transform: skewX($deg);

    &:before {
      transform: skewX(-$deg);
    }
  }
}

.leg {
  top: 0;
  background: linear-gradient(to left, $color-body-dark, $color-body, $color-body-light);
  transform-origin: center top;
  animation: a(leg);
  
  &, > .inner-leg {
    height: 40px;
    width: 30px;
    border-radius: 35%;
  }
  
  &:before, &:after {
    content: '';
    display: block;
    position: absolute;
  }
  
  > .inner-leg {
    top: 50%;
    transform-origin: center 10%;
    animation: a(leg-inner);

    &:before {
      animation: a(paw-inner);
    }
  }
  
  &:nth-child(1) {
    left: 20px;
    top: -2px;
  }
  
  &:nth-child(2) {
    left: 70px;
    
    ~ * {
      z-index: -1;
    
      &, & > .inner-leg, & > .inner-leg:before {
        
        animation-delay: 0.07s;
      }
    }
  }
  
  &:nth-child(3) {
    left: 35px;
    top: -10px;
  }
  
  &:nth-child(4) {
    left: 90px;
    top: -10px;
  }
}

.inner-leg {
  background: linear-gradient(to left, $color-body-dark, $color-body, $color-body-light);
  &:before {
    content: '';
    display: block;
    position: absolute;
    bottom: -10%;
    width: 105%;
    height: 50%;
    border-top-left-radius: 40% 40%;
    border-top-right-radius: 40% 40%;
    border-bottom-left-radius: 20%;
    border-bottom-right-radius: 20%;
    background-image:
      linear-gradient(
        to bottom,
        $color-body 0%,
        $color-body 50%,
        transparent 100%
      ),
      linear-gradient(
        to right,
        transparent 0%,
        transparent 25%,
        rgba(black, 0.5) 26%,
        rgba(black, 0.5) 35%,
        transparent 36%,
        transparent 65%,
        rgba(black, 0.5) 66%, 
        rgba(black, 0.5) 75%,
        transparent 76%
      ),
      linear-gradient(to top,
        $color-body-dark,
        $color-body,
        $color-body-light
      );
  }
}

html body {
  display: flex;
  flex-direction: row;
  justify-content: center;
  min-height: 100%;
  height: auto;
  align-items: center;
  $light: rgba(white, 0.6);
  $lighter: rgba(white, 0.3);
  background-image:
  repeating-linear-gradient(120deg,
    $light,
    $light 1px,
    transparent 1px,
    transparent 30px,
    $lighter 30px,
    $lighter 31px,
    transparent 31px,
    transparent 60px
  ),
  repeating-linear-gradient(60deg,
    $light,
    $light 1px,
    transparent 1px,
    transparent 30px,
    $lighter 30px,
    $lighter 31px,
    transparent 31px,
    transparent 60px
  ),
    repeating-linear-gradient(to bottom,
    $lighter,
    $lighter 1px,
    transparent 1px,
    transparent 30px);
  background-size: 70px 120px;
  
  @media (max-width: 600px) {
    flex-direction: column;
    
    .dex {
      max-width: 100%;
    }
  }
}

.dex {
  font-family: Lato, sans-serif;
  max-width: 40%;
  font-size: 14px;
  color: white;
  font-weight: 300;
  padding: 1rem 2rem;
}

.heading {
  font-size: 24px;
  text-transform: uppercase;
  margin-bottom: 14px;
  letter-spacing: 0.25ch;
  
  > span {
    font-weight: 100;
    margin-right: 0.5ch;
  }
  
  > strong {
    font-size: 28px;
    font-weight: 300;
  }
  
}

.pokeball {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  background: radial-gradient(0.4rem, white, white 50%, transparent 50%);
  margin-right: 1rem;
  
  &:before, &:after {
    content: '';
    display: block;
    position: absolute;
    bottom: -0.063rem;
    left: 0;
    height: 50%;
    width: 100%;
    border-radius: 0 0 1rem 1rem;
    box-shadow:
      inset 0 -0.09rem 0 0.09rem white,
      inset 0.09rem -0.09rem 0 0.09rem white,
      inset -0.09rem -0.09rem 0 0.09rem white
      ;
  }
  
  &:after {
    transform-origin: top center;
    transform: rotateX(180deg);
    bottom: 0.063rem;
  }
}
.info {
  display: inline-block;
  margin-right: 1rem;
  margin-bottom: 14px;
}

.subheading {
  font-size: 18px;
  line-height: 28px;
}

p {
  line-height: 18px;
  margin: 0;
  margin-bottom: 1rem;
}

a {
  transition: opacity 0.3s $easing;
  &, &:active, &:visited {
    color: white;
  }
  
  &:hover {
    opacity: 0.8;
  }
}

html {
  background: radial-gradient(50vmin 50vmin, #FEB4FF, #A3A3EC);

  background-position: -20vw center;
  background-repeat: no-repeat;
  background-color: #a3a3ec;
  
  @media (max-width: 600px) {
    background-position: center -20vw;
  }
  
  @media (max-width: 300px) {
    background-position: center -30vw;
  }
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

*, *:before, *:after {
  box-sizing: border-box;
  position: relative;
}