*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins';
}
html, body{
    width: 100%;
    height: 100vh;
    background-color: #001e4d;
}
.container{
    width: 90%;
    max-width: 600px;
    background-color: white;
    margin: 100px auto;
    border-radius: 10px;
    padding: 30px;
}
.container h1{
    font-size: 25px;
    color: #001e4d;
    font-weight: 600;
    border-bottom: 1px solid #333;
    padding-bottom: 30px;
}
.quiz {
    padding: 20px 0;
}
.quiz h2 {
    font-size: 18px;
    color: #001e4d;
    font-weight: 600;
}
.btn{
    background-color: white;
    color: #222;
    font-weight: 500;
    width: 100%;
    border: 1px solid #222;
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left     ;
}
.btn:hover:not([disabled]){
    background-color: #222;
border: 1px solid #001e4d;
    color: white;
}
.btn:disabled{
     cursor: no-drop;
}
#next-btn{
    background-color: #001e4d;
    color: white;
    font-weight: 500;
    width: 150px;
    border: none;
    padding: 10px;
    margin: 20px auto 0;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.d-none {
    display: none;
}
.correct {
     background-color: #9aeabc;
}
.incorrect {
     background-color: #ff9393;
}