pre {
    padding: 9.5px;
    margin: 0 0 10px;
    line-height: 1.42857143;
    word-break: break-all;
    word-wrap: break-word;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    border-radius: 4px;
}

h1 {
    line-height: 1.5;
}

img {
    max-width: 100%;
}

.mt-1 {
    margin-top: 8px;
}
.mt-2 {
    margin-top: 16px;
}
.mt-3 {
    margin-top: 24px;
}

.mb-1 {
    margin-bottom: 8px;
}
.mb-2 {
    margin-bottom: 16px;
}
.mb-3 {
    margin-bottom: 24px;
}

.item {
    margin-bottom: 24px;
}