img.om-box {
  border-color: gray;
  border-width: 1px;
  border-style: solid;	
}

.version-warning-banner {
    width: 100%;
    background-color: #f8e3d0;
    text-align: center;
    padding: 10px;
    margin-bottom: 10px;
}

.version-ref-stable {
    font-weight: bold;
}

/* adopted from https://stackoverflow.com/a/62338678/890242 */
.wy-nav-content {
    max-width: 60%;
}