enigmatic.css

html {
  max-width: 70ch;
  /* larger spacing on larger screens, very small spacing on tiny screens */
  padding: calc(1vmin + .5rem);
  /* shorthand for margin-left/margin-right */
  margin-inline: auto;
  /* fluid sizing: https://frontaid.io/blog/fluid-typography-2d-css-locks-clamp/ */
  font-size: clamp(1em, 0.909em + 0.45vmin, 1.25em);
  /* use system font stack: https://developer.mozilla.org/en-US/docs/Web/CSS/font-family */
  font-family: system-ui
}

/* increase line-height for everything except headings */
body :not(:is(h1, h2, h3, h4, h5, h6)) {
  line-height: 1.75;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 3em 0 1em;
}

p,
ul,
ol {
  margin-bottom: 2em;
  color: #1d1d1d;
}

body,
section {
  display: grid;
  margin: 0;
  grid-template-columns: var(--cols, 1fr 4fr 1fr);
  grid-template-rows: var(--rows, 1fr 9fr 1fr);
}

* {
  grid-column: span var(--span, 1);
  grid-row: span var(--span-rows, 1);
}

.flex {
  display: flex;
}

/** positioning ***/

.center {
  position: fixed;
  top: 50%;
  left: 50%;
  margin-top: -50px;
  margin-left: -100px;
}

.right {
  float: right;
}

.left {
  float: left;
}

.fixed {
  position: fixed;
}

.top {
  top: 0;
}

.bottom {
  bottom: 0
}

.fill {
  height: 100vh;
  width: 100wh
}

.hide {
  opacity: 0;
  transition: opacity 0.25s linear;
}

.show {
  opacity: 1;
  transition: opacity 0.25s linear;
}

.slide-in {
  animation: slide-in 0.1s forwards;
  -webkit-animation: slide-in 0.1s forwards;
}

.slide-out {
  animation: slide-out 0.1s forwards;
  -webkit-animation: slide-out 0.1s forwards;
}

@keyframes slide-in {
  100% {
    transform: translateX(0%);
  }
}

@-webkit-keyframes slide-in {
  100% {
    -webkit-transform: translateX(0%);
  }
}

@keyframes slide-out {
  0% {
    transform: translateX(0%);
  }

  100% {
    transform: translateX(-100%);
  }
}

@-webkit-keyframes slide-out {
  0% {
    -webkit-transform: translateX(0%);
  }

  100% {
    -webkit-transform: translateX(-100%);
  }
}

a {
  text-decoration: none;
}

.shadow {
  box-shadow: 6px 6px 6px #dbdbdb;
}

.cursor {
  cursor: default;
}

.margins {
  margin: var(--margins, 15px);
}

.padding {
  padding: var(--padding, 15px);
}

.rem {
  font-size: var(--rem, 2rem);
}

.faded {
  opacity: 0.5;
}

.fade {
  opacity: 1;
  transition: opacity 0.25s ease-in-out;
  -moz-transition: opacity 0.25s ease-in-out;
  -webkit-transition: opacity 0.25s ease-in-out;
}

.fade:hover {
  opacity: 0.5;
}

.unfade {
  opacity: 0.5;
  transition: opacity 0.25s ease-in-out;
  -moz-transition: opacity 0.25s ease-in-out;
  -webkit-transition: opacity 0.25s ease-in-out;
}

.unfade:hover {
  opacity: 1;
}

.rounded {
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
  -khtml-border-radius: 10px;
}

.round {
  vertical-align: middle;
  width: 50px;
  height: 50px;
  border-radius: 50%;
}

/** html elements **/

canvas {
  position: fixed;
  top: 0;
  left: 0;
}

ul {
  list-style-type: none;
  border: 20px;
  padding: 20px;
  width: 50%;
}

li {
  list-style-type: none;
  border: 10px;
  padding: 10px;
}

li:hover {
  background-color: rgb(243, 241, 241);
  cursor: pointer;
}

.opacity1 {
  opacity: .1
}

.opacity2 {
  opacity: .2
}

.opacity3 {
  opacity: .3
}

.opacity4 {
  opacity: .4
}

.opacity5 {
  opacity: .5
}

.opacity6 {
  opacity: .6
}

.opacity7 {
  opacity: .7
}

.opacity8 {
  opacity: .8
}

.opacity9 {
  opacity: .9
}

.bg-red {
  background-color: red;
}

.bg-blue {
  background-color: blue;
}

.bg-yellow {
  background-color: yellow;
}

.bg-green {
  background-color: green;
}

.bg-black {
  background-color: black;
}

.white {
  color: white;
}