<section>
  <div class="grid__container">
    <div class="grid__item"></div>
    <div class="grid__item"></div>
    <div class="grid__item"></div>
    <div class="grid__item"></div>
    <div class="grid__item"></div>
  </div>
</section>

<form action="">
  <div class="controle">
    <span>display:</span>
    <input type="radio" name="display" id="grid" checked />
    <label for="grid">grid</label>
    <input type="radio" name="display" id="inline-grid" />
    <label for="inline-grid">inline-grid</label>
  </div>
  <div class="controle">
    <label for="width">width:</label>
    <input type="range" name="width" id="width" min="20" max="60" value="40" />
    <span id="width-output">40</span>vw
    <label for="height" style="margin-left: 20px">height:</label>
    <input type="range" name="height" id="height" min="20" max="60" value="30" />
    <span id="height-output">40</span>vh
  </div>
</form>

@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");

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

body {
  width: 100vw;
  min-height: 100vh;

  display: flex;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  font-family: "Exo", Arial, sans-serif;
  background-color: #f7f7f7;

  padding: 20px;
}

section {
  max-width: 80vw;
  width: 100%;
  margin: 0 auto;

  display: flex;
  justify-content: center;
  align-items: center;
}

.grid__container {
  border: 1px dashed #f36;
  box-shadow: 0 0 0 6px rgb(0 0 0 / 13%);
  border-radius: 1px;
}

.grid__item {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
  background-color: #f7f7f7;
  counter-increment: item;
}

.grid__item::before {
  content: counter(item);
  color: #fff;
  font-size: 2rem;
  text-shadow: 1px 1px 0 rgba(0 0 0 / 0.25);
}

.grid__item:nth-child(1) {
  background-color: #f1c2c6;
}

.grid__item:nth-child(2) {
  background-color: #dac2f1;
}

.grid__item:nth-child(3) {
  background-color: #ccf1c2;
}

.grid__item:nth-child(4) {
  background-color: #c2e9f1;
}

.grid__item:nth-child(5) {
  background-color: #f1ebc2;
}
.grid__item:nth-child(6) {
  background-color: #3f51b5;
}

.grid__item:nth-child(7) {
  background-color: #810d16;
}

.grid__item:nth-child(8) {
  background-color: #4d0d81;
}

.grid__item:nth-child(9) {
  background-color: #0d4e81;
}

.grid__item:nth-child(10) {
  background-color: #0d815f;
}
.grid__item:nth-child(11) {
  background-color: #2196f3;
}
.grid__item:nth-child(12) {
  background-color: #ff5722;
}

.grid__container {
  grid-template-columns: repeat(3, 150px);
  gap: 10px;
}

.grid__container > .grid__item:nth-child(1) {
  grid-area: 1 / 1 / 4 / 2;
}

.grid__container > .grid__item:nth-child(2) {
  grid-area: 1 / 2 / 2 / 4;
}

form {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  padding-top: 20px;
  gap: 10px;
}

.controle {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

form label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.grid__container::-webkit-scrollbar-track {
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.9);
  border-radius: 10px;
  background-color: #444444;
}

.grid__container::-webkit-scrollbar {
  width: 6px;
  height: 6px;
  background-color: #f5f5f5;
}

.grid__container::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background-color: #d62929;
  background-image: linear-gradient(
    90deg,
    transparent,
    rgba(0, 0, 0, 0.4) 50%,
    transparent,
    transparent
  );
}

.grid__container {
  --grid: grid;
  --width: 40;
  --height: 30;
  display: var(--grid);
  grid-template-columns: repeat(3, 200px);
  gap: 10px;
  width: calc(var(--width) * 1vw);
  height: calc(var(--height) * 1vh);
  overflow: auto;
  transition: all 0.28s linear;
}

let inputRadios = document.querySelectorAll('input[type="radio"]');
let inputRanges = document.querySelectorAll('input[type="range"]');

let gridContainer = document.querySelector(".grid__container");

inputRadios.forEach((input, index) => {
  input.addEventListener("click", (etv) => {
    gridContainer.style.setProperty("--display", etv.target.id);
  });
});

inputRanges.forEach((input, index) => {
  input.addEventListener("click", (etv) => {
    gridContainer.style.setProperty(`--${etv.target.id}`, etv.target.value);
    document.getElementById(`${etv.target.id}-output`).textContent =
      etv.target.value;
  });
});