<div class="element">
  <h2>Hue(H) = 350</h2>
  <ul id="s">
    <li>100%</li>
    <li>75%</li>
    <li>50%</li>
    <li>25%</li>
    <li>0%</li>
  </ul>
  <ul id="l">
    <li>100%</li>
    <li>75%</li>
    <li>50%</li>
    <li>25%</li>
    <li>0%</li>
  </ul>
  <ul id="sl">
    <li>100%</li>
    <li>75%</li>
    <li>50%</li>
    <li>25%</li>
    <li>0%</li>
  </ul>
</div>

/* @use postcss-preset-env; */
/* @use postcss-color-function; */

@import url("https://fonts.googleapis.com/css?family=Gochi+Hand");

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  background-color: #291642;
  font-family: "Gochi Hand", sans-serif;
  color: #fff;
  font-size: 130%;
  letter-spacing: 0.1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100vw;
  min-height: 100vh;
}

.element {
  width: 50vw;
  min-height: 50vh;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  border-radius: 4vh;
  font-size: 2rem;
  
  /**
   * <hue> = <number> || <angle>
   * rad  = (π / 180) * deg
   * grad = deg * 400 / 360
   * turn = deg / 360
   */
  color: hsl(200 100% 50%);                                      
  border: 2vh solid hsl(1.047rad, 40%, 20%);                   
  box-shadow: 0px 0px 5px 6px hsl(255.5556grad 40% 80% / 50%); 
  background-color: hsl(0.52778turn, 50%, 90%, .8);            
}

ul, li {
  list-style: none outside none;
}

ul {
  display: grid;
  grid-template-columns: repeat(5, 6vw);
  grid-template-rows: 6vw;
  gap: 2vw;
  margin: 3vh 2vh;
  padding: 2vh;
  border: 1px dashed hsl(330 90% 50%);
  border-radius: 8px;
  position: relative;
}

ul::before {
  content:"";
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  right: 100%;
  margin-right: 2vh;
  font-size: 3rem;
}

#s::before {
  content:"S";
}

#l::before {
  content:"L";
}

#sl::before {
  content:"SL";
}

li {
  display: flex;
  justify-content: center;
  align-items: center;
  color: hsl(200 100% 50% / 0); 
  transition: all .2s ease;
  cursor: pointer;
}

li:hover {
  color: hsl(200 100% 50% / 1); 
  border-radius: 2vh;
}

#s li:nth-child(1) {
  background-color: hsl(350 100% 40%);
}

#s li:nth-child(2) {
  background-color: hsl(350 75% 40%);
}

#s li:nth-child(3) {
  background-color: hsl(350 50% 40%);
}

#s li:nth-child(4) {
  background-color: hsl(350 25% 40%);
}

#s li:nth-child(5) {
  background-color: hsl(350 0% 40%);
}

#l li:nth-child(1) {
  background-color: hsl(350 100% 100%);
}

#l li:nth-child(2) {
  background-color: hsl(350 100% 75%);
}

#l li:nth-child(3) {
  background-color: hsl(350 100% 50%);
}

#l li:nth-child(4) {
  background-color: hsl(350 100% 25%);
}

#l li:nth-child(5) {
  background-color: hsl(350 100% 0%);
}


#sl li:nth-child(1) {
  background-color: hsl(350 100% 100%);
}

#sl li:nth-child(2) {
  background-color: hsl(350 75% 75%);
}

#sl li:nth-child(3) {
  background-color: hsl(350 50% 50%);
}

#sl li:nth-child(4) {
  background-color: hsl(350 25% 25%);
}

#sl li:nth-child(5) {
  background-color: hsl(350 0% 0%);
}