<h3>Nepal</h3>

<div class="flag nepal">
  <div class="nepal__bg_blue">
    <div class="nepal__bg_red"></div>
  </div>

  <!-- I have used two strip to make the blue border -->
  <div class="nepal__blue_strip"></div>
  <div class="nepal__blue_strip"></div>

  <img src="https://imgur.com/llSwP7s.png" height="33" alt="" class="nepal__top_image" />
  <img src="https://imgur.com/J9OS3X9.png" height="61" alt="" class="nepal__bottom_image" />
</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;
}

.nepal__bg_blue {
  position: absolute;
  top: 40px;
  border-width: 160px;
  border-style: solid;
  border-color: transparent transparent transparent #003893;
}

.nepal__bg_red {
  position: absolute;
  top: -146px;
  left: -154px;
  border-width: 154px 154px;
  border-style: solid;
  border-color: transparent transparent transparent #dc143c;
}

/* top blue triangle */
.nepal__bg_blue::before {
  position: absolute;
  content: "";
  top: -150px;
  left: -160px;
  border-width: 50px 160px;
  transform: skewY(17deg);
  border-style: solid;
  border-color: transparent transparent transparent #003893;
}

/* top red triangle */
.nepal__bg_red::before {
  position: absolute;
  content: "";
  top: -152px;
  left: -154px;
  border-width: 43px 144px;
  transform: skewY(18deg);
  border-style: solid;
  border-color: transparent transparent transparent #dc143c;
}

.nepal__blue_strip {
  position: absolute;
  left: 50px;
  top: 95.5px;
  transform: skewX(47deg);
  background: yellow;
  background-color: #003893;
  height: 5px;
  width: 100px;
}

.nepal__blue_strip:nth-child(2) {
  top: 196px;
  left: 0;
  width: 154px;
}

.nepal > img {
  position: absolute;
}

.nepal > .nepal__top_image {
  left: 12px;
  top: 55px;
}

.nepal > .nepal__bottom_image {
  top: 58%;
  bottom: 11%;
}