index.css

:root {
  --primary-bg-color: #000000;
  --primary-color: #ffffff;
}

::selection {
  background: #eeeeee;
  color: #000000;
}

* {
  box-sizing: border-box;
  outline: 0;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

@keyframes fadein {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

body {
  margin: 0;
  width: 100%;
  height: 100vh;
  font-size: 18px;
  font-family: "Roboto Mono", "SF Mono", "Lucida Console", Monaco, monospace;
  animation: fadein 0.2s;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

header {
  display: flex;
  flex-direction: column;
}

nav {
  display: flex;
  overflow-x: auto;
  white-space: nowrap;
  align-items: center;
}

.circle {
  display: inline-block;
  margin: 8px;
  padding: 16px;
  border-radius: 50%;
}

main {
  padding: 32px;
}

button {
  display: inline-flex;
  margin: 4px;
  padding: 0 16px;
  height: 40px;
  border-radius: 4px;
  background: #000000;
  color: #ffffff;
  font-weight: 700;
  font-size: 18px;
  font-family: "Poppins", "Roboto", "Noto", sans-serif;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

input[type="number"] {
  padding: 2px 2px 2px 8px;
  width: 56px;
  border-radius: 4px;
  background: #000000;
  color: #ffffff;
}

input {
  font-size: 18px;
  font-family: "Roboto Mono", "SF Mono", "Lucida Console", Monaco, monospace;
  line-height: 2;
}

#content {
  margin: 32px 0;
  padding: 32px;
  border-radius: 4px;
  background-color: var(--primary-bg-color);
  color: var(--primary-color);
  font-weight: 700;
  font-size: 20px;
  font-family: "Poppins", "Roboto", "Noto", sans-serif;
  transition: background-color 0.2s ease-out, color 0.2s ease-out;
}

.flex {
  display: flex;
  flex-grow: 1;
  align-items: center;
}

.logo,
.title {
  font-weight: 700;
  font-family: "Poppins", "Roboto", "Noto", sans-serif;
}

#colors {
  display: flex;
  flex-direction: column;
}

nav.title .circle {
  margin-right: 16px;
}

#combocircle {
  background: linear-gradient(
    to right,
    var(--primary-bg-color) 50%,
    var(--primary-color) 50%
  );
}

#gradcircle {
  background: linear-gradient(
    to right,
    var(--primary-bg-color),
    var(--primary-color)
  );
}

.family {
  display: flex;
  padding: 0 0 32px 0;
  flex-wrap: wrap;
}

.color {
  display: flex;
  flex-direction: column;
  margin: 2px;
  flex-grow: 1;
}

.btn {
  display: flex;
  padding: 32px;
  border-radius: 4px;
  cursor: url("https://s1.iconbird.com/ico/0612/GooglePlusInterfaceIcons/w18h181338911221dropper.png"),
    pointer;
  transition: 0.2s;
}

.hex {
  max-width: 80px;
  color: #555555;
  text-transform: uppercase;
  text-overflow: ellipsis;
  font-size: inherit;
  font-family: inherit;
  cursor: pointer;
}

#snackbar {
  position: fixed;
  bottom: 16px;
  left: 16px;
  z-index: 1;
  visibility: hidden;
  padding: 8px 16px;
  border-radius: 4px;
  background-color: #555555;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
  color: #fff;
}

#snackbar.show {
  visibility: visible;
  animation: fadein 0.2s, fadeout 0.2s 1.8s;
}

.picker_wrapper {
  border-radius: 4px;
}

@keyframes fadeout {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}