.choice-group {
    display: none;
}

#start {
    display: block;
}

.choices-section h3 {
    margin-bottom: 6px;
}

.choices {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.choice-group {
    padding-bottom: 2em;
}

.choice button {
    display: block;
    width: 100%;
    font-size: 110%;
    margin-left: auto;
    margin-right: auto;
    text-transform: none;
}

.answers {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 2em;
}

.answer {
    display: none;
    background-color: #efefef;
    border: 2px solid #ccc;
    border-radius: 6px;
    font-weight: 400;
    padding: 2em 2em 1em 2em;
}