style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-weight: 300;
}
html{
    font-size: 62.5%;
}

h1{
    font-size: 40px;
    text-align: center;
    background-color: black;
    color: white;
    margin: 0px;
}
.main{
  width: 100vw;
  min-height: 80vh;
  display: grid;
  place-items: center;
  background-color: darkgray;

}
.inner{
    width: 95vw;
    min-height: 30vh;
   background-color: ghostwhite;
    padding: 3rem 8rem;
    border-radius: 1rem;
    box-shadow: 0 1rem 1rem -0.7rem rgba(0,0,0,0.4);
}

.inner h2{
    font-size: 3.5rem;
    font-weight: 400;
    margin-top: 1.5rem;
    margin: 1rem 0 4rem 0;
}
.inner li{
    font-size: 2rem;
    margin-top: 1.5rem;
    list-style: none;
}

input{
    cursor: pointer;
}

#submit, .btn{
padding: 1rem 3rem;
outline: none;
font-size: 2rem;
font-size: 400;
}
#submit{
    margin-top: 2.5rem;
    border: none;
    background-color: yellow ;
}
#submit:hover{
    background-color: rgb(168, 233, 71);
}
#showScore{
    background-color: #dfe6e9;
    margin-top: 3rem;
    padding: 3rem 4rem;
    box-shadow: 0 1rem 1rem -0.7rem rgba(0,0,0,0.4);
}
.scoreArea{
    display: none;
}
#showScore h3{
    font-size: 3rem;
    text-align: center;
}
#showScore .btn{
    margin-top: 2rem;
    background-color: #55efc4;
    color: #2d3436;
}
#showScore .btn:hover{
    background-color: #00b894;
    color: #fff;
}
#showAnswer{
    background-color: #dfe6e9;
    margin-top: 3rem;
    padding: 3rem 4rem;
    box-shadow: 0 1rem 1rem -0.7rem rgba(0,0,0,0.4);
}
.showAns{
    display: none;
}
.green{
    background-color: #9de7d2;
}