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

body{
    background:linear-gradient(135deg,#4e54c8,#8f44fd);
    min-height:100vh;

    display:flex;
    justify-content:center;
    align-items:center;
}

.quiz-container{

    width:600px;
    max-width:90%;

    background:white;

    padding:30px;

    border-radius:20px;

    box-shadow:0 10px 25px rgba(0,0,0,.3);

}

h1{

    text-align:center;

    color:#4e54c8;

    margin-bottom:20px;

}

#question-number{

    color:#777;

    margin-bottom:15px;

}

#question{

    margin-bottom:20px;

}

.btn{

    width:100%;

    padding:15px;

    margin:10px 0;

    border:none;

    border-radius:10px;

    background:#f2f2f2;

    font-size:18px;

    cursor:pointer;

    transition:.3s;

}

.btn:hover{

    background:#4e54c8;

    color:white;

    transform:scale(1.02);

}

.correct{

    background:#2ecc71 !important;

    color:white;

}

.wrong{

    background:#e74c3c !important;

    color:white;

}

#score{

    margin-top:20px;

    color:#4e54c8;

}

#next-btn{

    width:100%;

    padding:15px;

    margin-top:20px;

    border:none;

    border-radius:10px;

    background:#4e54c8;

    color:white;

    font-size:18px;

    cursor:pointer;

}

#next-btn:hover{

    background:#372fa7;

}

#result{

    text-align:center;

    margin-top:30px;

}

#play-again{

    margin-top:20px;

    padding:15px 30px;

    border:none;

    border-radius:10px;

    background:#2ecc71;

    color:white;

    font-size:18px;

    cursor:pointer;

}

#play-again:hover{

    background:#27ae60;

}
/* Progress Bar */

.progress{
    width:100%;
    height:12px;
    background:#ddd;
    border-radius:20px;
    margin:20px 0;
    overflow:hidden;
}

#progress-bar{

    width:0%;
    height:100%;
    background:linear-gradient(to right,#00c853,#64dd17);
    transition:.4s;

}

/* Timer */

#timer{

    text-align:right;
    color:#ff5722;
    margin-bottom:20px;

}
#home-screen{

    width:600px;
    max-width:90%;

    background:white;

    padding:40px;

    border-radius:20px;

    text-align:center;

    box-shadow:0 10px 25px rgba(0,0,0,.3);

}

#home-screen p{

    margin:20px 0;

    color:#555;

}

#start-btn{

    padding:15px 35px;

    border:none;

    border-radius:10px;

    background:#4e54c8;

    color:white;

    font-size:20px;

    cursor:pointer;

}

#start-btn:hover{

    background:#372fa7;

}