<div style="--gradient: linear-gradient(red, gold)"></div>
<div style="--gradient: radial-gradient(circle at left top,red, gold)"></div>
<div style="--gradient: conic-gradient(red, gold)"></div>
<div style="--gradient: repeating-linear-gradient(red, red 10%, gold 10%, gold 20%)"></div>
<div style="--gradient: repeating-radial-gradient(circle at left top, red, red 10px, gold 10px, gold 20px)"></div>
<div style="--gradient: repeating-conic-gradient(red, gold 20deg)"></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;
  background-color: #222;
  color: #fff;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px 10px;
  padding: 10px 10px 36px;
  font-size: 1.5rem;
  place-content: center;
}

div {
  min-height: 40vh;
  border: 10px solid;
  border-image: var(--gradient) 1;
  position: relative;
}

div::after {
  content: attr(style);
  font-size: 12px;
  position: absolute;
  left: 5px;
  right: 5px;
  text-align: center;
  white-space: nowrap;
  top: calc(100% + 20px);
}