body{
font-family:sans-serif;
background:#f5f5f5;
margin:0;
padding:20px;
}

.container{
max-width:800px;
margin:auto;
background:#fff;
padding:20px;
border-radius:10px;
box-shadow:0 0 10px rgba(0,0,0,0.1);
}

h1{
text-align:center;
}

button{
width:100%;
padding:15px;
margin:5px 0;
font-size:18px;
cursor:pointer;
border:none;
border-radius:8px;
background:#4285f4;
color:white;
}

button:hover{
opacity:0.9;
}

.choice{
border:1px solid #ddd;
border-radius:8px;
padding:10px;
margin-bottom:10px;
}

.choice label{
font-size:20px;
}

.choice button{
width:auto;
padding:8px 15px;
margin-left:10px;
font-size:14px;
}

#result{
font-size:24px;
font-weight:bold;
text-align:center;
}

.correct{
color:green;
}

.wrong{
color:red;
}

#progress{
font-size:20px;
font-weight:bold;
}

select{
width:100%;
padding:12px;
font-size:18px;
}

@media(max-width:600px){

```
h1{
    font-size:28px;
}

button{
    font-size:20px;
}

.choice label{
    display:block;
    margin-bottom:10px;
}
```

}