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

body{
    background-color: #012635;
}

.main{
    background-color: #e6e6fa;
    width: 90%;
    max-width: 500px;
    margin: 100px auto 0;
    border-radius: 10px;
    padding: 30px;
}

.main h1 {
    font-size: 30px;
    color: #000080;
    font-weight: 600;
    border-bottom: 1px solid #333;
    padding-bottom: 25px;
}

.quiz{
    padding: 20px 0;
}

.quiz h2{
    font-size: 20px;
    color: #000080;
    font-weight: 600;
}

.btn {
    background-color: white;
    color: #222;
    font-weight: 600;
    width: 100%;
    padding: 10px;
    border: 1px solid black;
    margin: 10px auto;
    text-align: left;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.5s;
}

.btn:hover:not([disabled]){
    background-color: #222;
    color: aliceblue;
}

.btn:disabled{
    cursor: not-allowed;
}
#next-btn {
    background-color: #ffA500;
    color: black;
    font-weight: 700;
    border: 0;
    padding: 10px 40px 10px 40px;
    border-radius: 4px;
    margin: 20px auto 0;
    cursor: pointer;
    display: none;
}

.correct {
    background-color: rgb(123, 211, 123);
}

.incorrect {
    background-color: rgb(222, 116, 116);
}