styles.css

*{
    margin:0;
    padding:0;
    font-family: 'Times New Roman', Times, serif;
    box-sizing: border-box;
}

body{
    background-color: cadetblue;
}

.app{
        width: 90%;
        max-width: 800px;       
        background-color: white; 
        margin:100px auto 0;
        border: 1px solid #ccc;  
        border-radius:10px;  
        padding: 30px;                       
        
    }
.app h1{
    text-align: center;
    font-weight:25px;
    color:black;
    padding-bottom: 30px;
    font-weight: 600;
}

.question{
    padding: 20px 0;
}

.question h2{
    text-align:center;
    font-size: 20px;
    color:black;
    font-weight:400;
}

.btn1{
    background-color: #4c7faf;
    color: #ffffff;
    font-weight: 600;
    width: 100%;
    border: 2px solid transparent;
    padding: 12px 0;
    text-align: left;
    margin: 12px 0;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.5s ease;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
}

.btn1:hover:not([disabled]) {
    background-color: black;
    border: 2px solid #ffffff;
    box-shadow: 0px 6px 8px rgba(0, 0, 0, 0.15);
    transform: translateY(-3px);
}

.btn1:disabled{
    cursor:no-drop;
}

#next{
    background-color: #4caf93;
    color: #ffffff;
    font-weight: 400;
    border: 2px solid transparent;
    width: 20%;
    padding: 8px 0;
    margin: 8px auto 0;
    cursor: pointer;
    border-radius: 20px;
    display: block;
}

.correct{
    background-color: Green;
}

.incorrect{
    background-color: red;
}