*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #b8c6db;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
.container{
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px 2px rgba(100, 100, 100, 0.1);
    width: 600px;
    overflow: hidden;
}
.quizzheader{
    padding: 4rem;
}
h1{
    padding: 1rem;
    text-align: center;
}
ul{
    list-style: none;
}
ul li{
    font-size: 1.2rem;
    margin: 1rem 0;
}
ul li label{
    cursor: pointer;
}
button{
    font-size: 2rem;
    background-color: blue;
    color: #fff; 
    border: none;
    padding: 1.3rem;
    display: block;
    width: 100%;
    cursor: pointer;
    transition: all 0.5s ease;
}
button:hover{
    background-color: blueviolet;
    transition: all 0.5s ease;
}