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html

css

/* See "View Compiled CSS" for raw CSS ---> */
:root {
  --dark: #212121;
  --dark-contrast: #424242;
  --light: #fafafa;
  --light-contrast: #cfd8dc;
  --accent: #2196f3;
}

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

html {
  font-family: 'Roboto', sans-serif;
  font-size: 1rem;
  line-height: 1.5;
}

body {
  display: grid;
  place-items: center;
  margin: 0;
  height: 100vh;
  background-color: var(--dark);
}

ul, li {
  margin: 0;
  padding: 0;
  list-style: none;
}

.select {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 300px;
  background-color: var(--dark-contrast);
  color: #fff;
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  user-select: none;
  padding: 1.25rem 1.5rem;
  border-radius: 4px;
}
.select:focus {
  outline: 0;
}
.select:focus .list {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: all;
}
.select:hover {
  background-color: #484848;
}
.select:focus {
  background-color: #4f4f4f;
  transition: 400ms ease;
}
.select::after {
  content: '';
  display: inline-block;
  margin-left: auto;
  border-left: .3755rem solid transparent;
  border-right: .3755rem solid transparent;
  border-top: .375rem solid #fff;
}
.select .list {
  position: fixed;
  top: 50%;
  left: 50%;
  max-height: 256px;
  width: clamp(300px, 75vw, 320px);
  border-radius: 4px;
  background-color: var(--light);
  color: #000;
  transform: translate(-50%, -50%) scale(0);
  transition: all 400ms ease;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  overflow-y: auto;
}
.select .list .group {
  padding: .75rem 0;
}
.select .list .group:not(:last-child) {
  border-bottom: 1px solid #e1e1e1;
}
.select .list label {
  display: flex;
  align-items: center;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
}
.select .list label:hover {
  background-color: #ededed;
}
.select .list label:active {
  background-color: #e1e1e1;
  transition: 400ms ease;
}
.select .list label input[type=radio] {
  margin-right: 1rem;
}

input[type=radio] {
  position: relative;
  height: 24px;
  width: 24px;
  margin: 0;
  border-radius: 50%;
  border: solid 1px var(--light-contrast);
  background-color: transparent;
  appearance: none;
  cursor: pointer;
}
input[type=radio]:checked {
  border: none;
  background-color: var(--accent);
}
input[type=radio]:checked::before {
  display: block;
}
input[type=radio]:focus {
  outline: 0;
}
input[type=radio]::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  display: none;
  width: 50%;
  height: 50%;
  border-radius: 50%;
  background-color: var(--light);
  transform: translate(-50%, -50%);
}

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