Internal Spacing or Padding

index.html

<div class="container">
  <h1>Internal Spacing or Padding</h1>

  <div class="box">
    <div class="p-top">
      <div></div>
      <p>padding-top: 30px;</p>
    </div>

    <div class="p-right">
      <div></div>
      <p>padding-right: 30px;</p>
    </div>

    <div class="p-bottom">
      <div></div>
      <p>padding-bottom: 30px;</p>
    </div>

    <div class="p-left">
      <div></div>
      <p>padding-left: 30px;</p>
    </div>

    <div class="p-allFourSides">
      <div></div>
      <p>All four sides: 30px;</p>
    </div>
  </div>
</div>

style.css

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

/* MAIN CODE SHOWCASING THE USE OF PADDING */

.p-top {
  padding-top: 30px;
}

.p-right {
  padding-right: 30px;
}

.p-bottom {
  padding-bottom: 30px;
}

.p-left {
  padding-left: 30px;
}

.p-allFourSides {
  padding: 30px;
}

/* -------------------------- */

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

html,
body {
  height: 100%;
}

body {
  font-family: "Rowdies", cursive;
  color: #262626;
}

.container {
  width: 100%;
  height: 100%;
  border: 16px ridge #ff6550;
  background: #ffe7e7;
  text-align: center;
}

.box {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(200px, 1fr));
  justify-content: center;
  align-items: center;
  gap: 3rem;
  padding: 2rem;
}

[class^="p-"] {
  border: 4px solid tomato;
}

[class^="p-"] > div {
  width: 100px;
  height: 100px;
  background: #d33a25;
}

@media (max-width: 900px) {
  .box {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}