* {
    margin: 0;
    padding: 0 ;
    font-family: 'Poppins', sans-serif;
    box-sizing: border-box;
}

body{
    background:  #001e4d;
}

.app{
    background: white;
    width: 90%;
    max-width: 600px;
    margin: 100px auto 0;
    border-radius: 10px;
    padding: 30px;
}

.app 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: white;
        color: #222;
        font-weight: 500;
        width: 100%;
        border: 1px solid #222;
        padding: 10px;
        margin: 10px 0;
        text-align: left;
        border-radius: 4px;;
        cursor: pointer;
    }

    .btn:hover:not([disabled]){
        background: #222;
        color: white;
        transition: 0.3s;
    }

    .btn:disabled{
        cursor: no-drop;
    }
    #next-btn{
        background: #001e4d;
        color: #fff;
        font-weight: 500;
        width: 150px;
        border: 0;
        padding: 10px;
        margin: 20px auto 0;
        border-radius: 4px;
        cursor: pointer;
        display: none;
    }

    .correct{
        background: #9aeabc;
    }

    .incorrect{
        background: #ff9393;
    }