header{
display:flex;
justify-content:space-between;
align-items:center;
}
blockquote{
    border-left: 4px solid #ccc;
    margin: 1.5em 10px;
    padding: 0.5em 10px;
    color: #666;
    background-color: #f9f9f9;
}
img{
    max-width: 50%;
}
code{
    background-color: #f4f4f4;
    padding: 2px 4px;
    border-radius: 4px;
}