<section>
  <div class="container flex">
    <h1 data-width="auto">CSS is Awesome</h1>
    <h1 data-width="fit-content">CSS is Awesome</h1>
    <h1 data-min-width="fit-content">CSS is Awesome</h1>
    <h1 data-max-width="fit-content">CSS is Awesome</h1>
  </div>
  <form action="">
    <input type="range" min="0" max="100" value="100" />
  </form>
</section>

<form action="">
  <span>display:</span>
  <label for="flex">
    <input type="radio" name="display" value="flex" id="flex" checked />
    flex
  </label>
  <label for="inline-flex">
    <input type="radio" name="display" value="inline-flex" id="inline-flex" />
    inline-flex
  </label>
  <label for="grid">
    <input type="radio" name="display" value="grid" id="grid" />
    grid
  </label>
  <label for="inline-grid">
    <input type="radio" name="display" value="inline-grid" id="inline-grid" />
    inline-grid
  </label>
</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 {
  /*   width: 40vw; */
  margin: 0 auto;

  display: flex;
  justify-content: center;
  /*   align-items: center; */
  flex-direction: column;

  gap: 10px;
  box-shadow: 0 0 0 6px rgb(0 0 0 / 13%);
  border-radius: 6px;
}

.container {
  border: 1px dashed #f36;
  border-radius: 1px;
}

h1 {
  background-color: #f7f7f7;
  place-self: center stretch;
  color: #444;
  padding: 5px 0;
  position: relative;
}

h1::before {
  content: "width: " attr(data-width);
  position: absolute;
  bottom: 100%;
  left: 5px;
  white-space: nowrap;
  font-size: 14px;
  color: #fff;
  background: rgb(0 0 0 / 0.8);
  padding: 3px 6px;
  border-radius: 2px;
  writing-mode: vertical-lr;
}

.grid h1::before {
  left: auto;
  top: 50%;
  bottom: auto;
  right: 100%;
  transform: translate(0, -50%);
  writing-mode: horizontal-tb;
}

h1:nth-child(1) {
  background-color: #f1c2c6;
}

h1:nth-child(2) {
  background-color: #dac2f1;
}

h1:nth-child(3) {
  background-color: #ccf1c2;
}

h1:nth-child(4) {
  background-color: #00bcd4;
}

form {
  width: 100%;
}
input[type="range"] {
  width: 100%;
}
.container {
  --width: 100%;
  --display: flex;
  padding: 20px;
  width: var(--width);
  display: var(--display);
}

.flex h1[data-width="auto"] {
  width: auto;
}

.flex h1[data-min-width="fit-content"] {
  min-width: fit-content;
}

.flex h1[data-max-width="fit-content"] {
  max-width: fit-content;
}

h1[data-min-width="fit-content"]::before {
  content: "min-content: " attr(data-min-width);
}
h1[data-max-width="fit-content"]::before {
  content: "max-width: " attr(data-max-width);
}

.flex h1[data-width="fit-content"] {
  width: fit-content;
}

.container.grid {
  grid-template-columns: auto fit-content fit-content fit-content;
}

form {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
}

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

const range = document.querySelector('input[type="range"]');
const container = document.querySelector(".container");
const radios = document.querySelectorAll('input[type="radio"]');

range.addEventListener("input", (etv) => {
  container.style.setProperty("--width", `${etv.target.value}%`);
});

radios.forEach((radio, index) => {
  radio.addEventListener("click", (etv) => {
    container.style.setProperty("--display", etv.target.id);
    if (etv.target.id === "grid" || etv.target.id === "inline-grid") {
      container.classList.remove("flex");
      container.classList.add("grid");
    } else if (etv.target.id === "flex" || etv.target.id === "inline-flex") {
      container.classList.remove("grid");
      container.classList.add("flex");
    } else {
      container.classList.remove("grid flex");
    }
  });
});