@import 'fonts'; $theme_dark: (  "background-color": null, ); $theme_main: (  "text-size": 3em,  "text-color": black,  "text-shadow": #36ad 0px 0px 3px,  "card-background": #d6f,  "card-shadow": #11121212 0px 0px 2px 1px,  "card-padding": 1rem,  "card-margin": 0.5in,  "image-width": 600px,  "image-height": 100vh,  "background-color": #dedbef,  "i-ran-out-of-placeholders-for-units": (1vw 100% 60pt), ); $current_theme: $theme_main; @mixin themed() {  $current_theme: $theme_main !global;  @content;  @media (prefers-color-scheme: dark) {  $current_theme: $theme_dark !global;  @content;  }    .#{"dark"} & {  $current_theme: $theme_dark !global;  @content;  } } @function theme($variable) {  @if map-has_key($current_theme, $variable) {  @return map-get($current_theme, $variable);  } @else {  @error "Unknown theme variable: #{$variable}";  } } body {  @include themed {  background-color: theme('background-color');  background-image: url("https://github.com/sharkdp/bat/raw/master/doc/logo-header.svg");  }    header[data-selectable="false"] {  -webkit-user-select: none;  -moz-user-select: none;  -ms-user-select: /* CSS comment */ none;  cursor: default !important; // SCSS comment  }    > div {  border: #04f 1px solid;    &::after {  content: 'Pseudo';  color: #2F5F7F;  box-sizing: border-box;  }  } } @keyframes rotate {  0% {  transform: rotate(0deg);  }  50% {  transform: rotate(180deg)}  100% {transform: rotate(0rad);} } @font-face {  font-family: 'Example Font';  src: url(example.ttf) format('ttf');  src: local('Comic Sans MS'); }