<h3>Australia</h3>

<div class="container" data-name="#9 - Australia">
  <div class="flag australia">
    <div class="australia__left__top">
      <div class="australia__plus">
        <div class="plus"></div>
      </div>
      <div class="australia__x">
        <div class="x__strip-1"></div>
        <div class="x__strip-2"></div>
      </div>
    </div>

    <img src="https://imgur.com/2X2snYP.png" width="215" alt="" />
  </div>
</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;
}

.australia {
  background-color: #001b6a;
}

.australia__left__top {
  width: 50%;
  height: 50%;
  display: grid;
  place-items: center;
  overflow: hidden;
  position: relative;
}

.australia__plus {
  z-index: 1;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 7px white) drop-shadow(7px 0 white)
    drop-shadow(-7px 0 white) drop-shadow(0 -7px white);
}

.australia__plus .plus {
  width: 100%;
  height: 100%;
  background-color: #e51837;
  clip-path: polygon(
    0% 40%,
    43% 40%,
    43% 0%,
    58% 0%,
    58% 40%,
    100% 40%,
    100% 60%,
    58% 60%,
    58% 100%,
    43% 100%,
    43% 60%,
    0% 60%
  );
}

.australia__x {
  position: absolute;
  inset: 0;
}

.australia__x > .x__strip-1,
.australia__x > .x__strip-2 {
  position: relative;
  background-color: white;
  width: 150%;
  height: 20px;
  transform: rotate(-35deg) scale(1.3) translate(-13px, 5px);
}

.australia__x > .x__strip-2 {
  transform: rotate(35deg) scale(1.3) translate(13px, 30px);
}

.australia__x > .x__strip-1::before,
.australia__x > .x__strip-1::after,
.australia__x > .x__strip-2::before,
.australia__x > .x__strip-2::after {
  position: absolute;
  background-color: #e51837;
  content: "";
  width: 35%;
  height: 7px;
}

.australia__x > .x__strip-1::before,
.australia__x > .x__strip-2::before {
  top: 10px;
}

.australia__x > .x__strip-1::after,
.australia__x > .x__strip-2::after {
  bottom: 10px;
  left: 35%;
}

.australia > img {
  position: absolute;
  left: 62px;
  top: 40px;
}