style.css

*{
    margin: 0;
    padding: 0;
    /* align-items: center;
    border-radius: 100ch;
    box-shadow: #fff; */
    font-family: 'Poppins', sans-serif;
    box-sizing: border-box;
}
body{
    background: #001e4d;
}
.app{
    background: #fff;
    width: 90%;
    max-width: 600px;
    margin: 100px auto 0;
    border-radius: 8px;
    padding: 30 px;
}  
.app h1{
    font-size: 50px;
    text-align: center;
    margin-top: 10%;
    color: #001e4d ;
    width: 100%;
    font-weight: 600;
    border-bottom: 2px solid #333;  
    padding-bottom: 20px;
}
.quiz{
    padding: 20px 0;
}
.quiz h2{
    font-size: 20px;
    color: #001e4d;
    font-weight: 600;
    margin: 1px;
    margin-left: 1ch;
}
.btn{
    background: #fff;
    color: #222;
    font-weight: 500;
    width: 95%;
    border: 2px solid #222;
    padding: 10px;
    margin: 10px ;
    text-align: left;
    border-radius: 80px;
    cursor: pointer;
    transition: all 0.2s;
}
.btn:hover:not([disabled]){
    background: #001e4d;
    color: #fff;
}
.btn:disabled{
    cursor: no-drop;
}
#next-btn{
    background: #001e4d;
    color: #fff;
    font-weight: 500;
    width: 100px;
    border: 2;
    padding: 10px;
    margin: 20px auto 0;
    border-radius: 80px;
    cursor: pointer;
    display: none;
}
.correct{
    background : #92e3b5
}
.incorrect{
    background: #f4b1b1
}