Style.css

@import url("https://fonts.googleapis.com/css2?family=Josefin+Sans:wght@200&display=swap");
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Josefin Sans", sans-serif;
  font-weight: 300;
}

html {
  font-size: 100%;
}
.main-div {
  width: auto;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background-color: hsl(0, 50%, 90%);
}

.inner-div {
  width: 40vw;
  background-color: hsl(120, 50%, 95%);
  padding: 3rem 8rem;
  border: 1rem;
  border-radius: 20px;
  box-shadow: 10px 10px 5px rgba(0, 255, 0, 0.1);
}

.inner-div h2 {
  font-size: 35px;
  font-weight: 400;
  margin: 1rem 0 2rem 0;
}

.inner-div li {
  font-size: 20px;
  margin-top: 20px;
  list-style: none;
}
.highlight:hover {
  display: block;
  color: blue;
}
input {
  cursor: pointer;
}

#submit,
.btn {
  border: 1px solid black;
  background-color: white;
  padding: 10px 10px;
  display: block;
  margin: auto;
  text-transform: uppercase;
  font-size: 16px;
  cursor: pointer;
  border-color: #2196f3;
  border-radius: 7px;
  color: dodgerblue;
}
#submit:hover {
  background: #2196f3;
  color: white;
}
#showscore {
  background-color: rgb(47, 226, 167);
  margin-top: 3rem;
  padding: 3rem 4rem;
}
#showscore h3 {
  font-size: 3rem;
  text-align: center;
}
#showscore .btn {
  margin-top: 2rem;
  background-color: white;
  color: black;
}
#showscore .btn:hover {
  background: #2196f3;
  color: white;
}