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

body {
    background: linear-gradient(90deg, rgba(2, 0, 36, 1) 0%, rgba(9, 116, 121, 1) 36%, rgba(0, 212, 255, 1) 100%);
    width: 100%;
    min-height: 100vh;
}

.app {
    background-color: #fff;
    width: 90%;
    max-width: 600px;
    margin: 20px auto 0;
    border-radius: 10px;
    padding: 30px;
}

.heading {
    display: flex;
    align-items: center;
}

#ln {
    border: 2px solid #001e4d;
    margin-top: 10px;
    border-radius: 5px;
}

.app h1 {
    font-size: 40px;
    font-weight: 600;
    color: #001e4d;
    padding-left: 20px;


}

.quiz {
    padding: 20px 0px;

}

.quiz h2 {
    font-size: 18px;
    color: #001e4d;

}

.btn {
    background: white;
    color: #222;
    font-weight: 500;
    width: 100%;
    border: 1px solid #222;
    padding: 10px;
    margin: 10px 0;
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    transition: all 0.1s;
}

.btn:hover:not([disabled]) {


    background-color: #22222233;

    transform: scale(1.05);
}

.btn:disabled {
    cursor: no-drop;
}

#next {
    background-color: #001e4d;
    color: #fff;
    font-weight: 500;
    width: 150px;
    border: none;
    padding: 10px;
    margin: 20px auto 0;
    border-radius: 8px;
    cursor: pointer;
    display: none;
    transition: 0.2s;

}

#next:hover {
    transform: scale(1.1);
    background-color: #2f4c7a;
}

.correct {
    background-color: rgba(24, 124, 24, 0.61);

}

.incorrect {
    background-color: rgba(255, 0, 0, 0.493);

}

#ln2 {
    border: 2px solid #001e4d;
    margin-top: 10px;
    border-radius: 5px;
}

#foot2 {
    padding: 20px 0px;
    font-size: 18px;
    color: #001e4d;
}

#ln3 {
    border: 2px solid #001e4d;
    margin-top: 10px;
    border-radius: 5px;
}

#footSOL {
    padding: 20px 0px;
    font-size: 18px;
    color: #001e4d;
}

@media (max-width : 600px) {
    img:not(.no-resize) {
        width: 100%;
        height: auto;
    }
}