style.css

body {
    background-color: rgb(217, 217, 217);
    font-family: sans-serif;
    text-align: center;
}

#title {
    font-size: 48px;
}

#container {
    box-shadow: 4px 4px 5px black;
    background: linear-gradient(#2E3192, #1BFFFF);
    padding: 25px;
    border-radius: 20px;
    color: white;
    margin-top: 125px;
    width: 50%;
    margin-left: 350px;
}

#question {
    font-size: 40px;
    font-weight: bolder;
}

#ans {
    border: none;
    font-size: 20px;
    padding: 10px;
    border-radius: 10px;
}

button {
    background-color: red;
    font-size: 20px;
    cursor: pointer;
    padding: 10px;
    border: none;
    color: white;
    border-radius: 10px;
}

button:hover {
    background-color: hsl(0, 100%, 60%);
}

button:active {
    background-color: hsl(0, 100%, 70%);
}