<div class="container">
  <h1>Full-Bleed Layout Using CSS Grid</h1>
  <p>Oftentimes, we want to limit the width of an element relative to its parent, and at the same time, to make it dynamic. So having a base width or height with the ability to make it extend based on the available space.</p>
  <div class="full">
    <img src="https://picsum.photos/1920/300?random" alt="" width="1920" height="300">
  </div>
  <p>Oftentimes, we want to limit the width of an element relative to its parent, and at the same time, to make it dynamic. So having a base width or height with the ability to make it extend based on the available space.</p>
</div>

<div class="form">
  <label for="gap">gap:</label>
  <input type="range" id="gap" name="gap" min="0" max="50" value="20" steps="1" />
  <output id="gap-output">20px</output>
  <label for="min-width">min-width:</label>
  <input type="range" id="min-width" name="min-width" min="45" max="75" value="60" steps="1" />
  <output id="min-width-output">60ch</output>
</div>

@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;
  font-family: "Exo", Arial, sans-serif;
  line-height: 1.5;
  background-color: #557;
  display: grid;
  grid-template-rows: 1fr auto;
  color: #fff;
  align-items: start;
  font-size: clamp(1rem, 1.2rem + 1vw, 1.25rem);
}

.form {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  background-color: rgb(0 0 0 / 0.5);
  padding: 10px;
}

:root {
  --gap: 20px;
  --minWidth: 60ch;
}

.container {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr min(var(--minWidth), calc(100% - var(--gap) * 2)) 1fr;
}

.container > * {
  grid-column: 2;
}

.container > .full {
  grid-column: 1 / -1;
}

.full img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
}

const rootElement = document.documentElement;
const gapInput = document.getElementById("gap");
const gapOutput = document.getElementById("gap-output");
const minWidthInput = document.getElementById("min-width");
const minWidthOutput = document.getElementById("min-width-output");

gapInput.addEventListener("input", (etv) => {
  rootElement.style.setProperty("--gap", `${etv.target.value}px`);
  gapOutput.textContent = `${etv.target.value}px`;
});

minWidthInput.addEventListener("input", (etv) => {
  rootElement.style.setProperty("--minWidth", `${etv.target.value}ch`);
  minWidthOutput.textContent = `${etv.target.value}ch`;
});