<h3>Iceland</h3>

<div class="flag iceland"></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;
}

.iceland {
  background: linear-gradient(
    #00519d 40%,
    #fff 40%,
    #fff 45%,
    #dd1833 45%,
    #dd1833 55%,
    #fff 55%,
    #fff 60%,
    #00519d 0
  );
}

.iceland::before {
  position: absolute;
  content: "";
  left: 86px;
  background: #dd1833;
  height: 50%;
  width: 20px;
  box-shadow: 0 100px #dd1833, 10px -12px white, -10px -12px white,
    10px 110px white, -10px 110px white;
}