<h3></h3>

<div class="flag chile"></div>

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

body {
  width: 100%;
  height: 100vh;
  background-color: rgb(221, 239, 255);
  display: grid;
  place-items: center;
  font-family: cursive;
  font-weight: bold;
}

h3 {
  position: absolute;
  text-align: center;
  top: 20px;
}

/* Main Style Stars from here  */
.flag {
  position: relative;
  width: 300px;
  height: 200px;
  box-shadow: 0 0 1px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.chile {
  background: linear-gradient(#fff 50%, #e51717 0);
}

.chile::before {
  position: absolute;
  content: "";
  width: 40%;
  height: 50%;
  background-color: #1f2e61;
}

.chile::after {
  position: absolute;
  content: "";
  height: 70px;
  width: 70px;
  margin: 15px 25px;
  background-color: white;
  clip-path: polygon(
    50% 0%,
    61% 35%,
    98% 35%,
    68% 57%,
    79% 91%,
    50% 70%,
    21% 91%,
    32% 57%,
    2% 35%,
    39% 35%
  );
}