style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500&display=swap");

* {
  box-sizing: border-box;

  /* No Selection */
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none; /* Safari */
  -khtml-user-select: none; /* Konqueror HTML */
  -moz-user-select: none; /* Old versions of Firefox */
  -ms-user-select: none; /* Internet Explorer/Edge */
  user-select: none; /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}

body {
  background-image: linear-gradient(315deg, #e2cfea 0%, #6247aa 100%);
  background-attachment: fixed;
  font-family: "Poppins", sans-serif;
  display: flex;
  flex-direction: row;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.flip-card-inner {
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.portuguese-box {
  transform: rotateY(180deg);
}

.container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  padding: 1em;
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
  font-size: 2em;
  width: 100%;
}

.caret-btn {
  font-size: 60px;
  margin: auto;
}

.caret-btn a {
  color: black;
}

/* RESPONSIVE SIZES */

.flip-card {
  width: 100%;
}

@media screen and (min-width: 400px) {
  .flip-card {
    width: 375px;
  }
}