.markdown-section {
    padding: 0 3px;
}
.markdown-section img {
    border: 1px solid rgba(0,0,0,.25);
    -webkit-box-shadow: 0 3px 6px rgba(0,0,0,.25);
    -moz-box-shadow: 0 3px 6px rgba(0,0,0,.25);
    box-shadow: 0 3px 6px rgba(0,0,0,.25);
    margin: 20px 0;
}