CodePen Embed - ymOOzV

<div class="box"></div>

.box {
  width: 100%;
  height: 90vh;
  border: 1px solid #FF6C60;
  background-image: repeating-linear-gradient(
    90deg,
    #FFF, #FFF 6px,
    #FF6C60 6px, #FF6C60 7px
  );
}

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