materio-base-d7/modules/block/block.css

#blocks tr.region-title td {
  font-weight: bold;
}
#blocks tr.region-message {
  font-weight: normal;
  color: #999;
}
#blocks tr.region-populated {
  display: none;
}
.block-region {
  background-color: #ff6;
  margin-top: 4px;
  margin-bottom: 4px;
  padding: 3px;
}
a.block-demo-backlink,
a.block-demo-backlink:link,
a.block-demo-backlink:visited {
  background-color: #B4D7F0;
  -moz-border-radius: 0 0 10px 10px;
  -webkit-border-radius: 0 0 10px 10px;
  border-radius: 0 0 10px 10px;
  color: #000;
  font-family: "Lucida Grande", Verdana, sans-serif;
  font-size: small;
  line-height: 20px;
  left: 20px; /*LTR*/
  padding: 5px 10px;
  position: fixed;
  z-index: 499;
}
a.block-demo-backlink:hover {
  text-decoration: underline;
}