chrome-extensions-samples/apps/samples/webview-samples/declarative-web-request/browser.css

body {
  font-family: Lucida Grande, Arial, sans-serif;
}

pre {
  display: inline;
}

label,
input,
button,
hr {
  flex: none;
}

hr {
  width:100%;
}

label,
.submit {
  font-weight: bold;
  font-family: inherit;
}

input,
#console div {
  font-family: "courier";
}

#console div {
  text-indent: -15px;
  margin-left: 15px;
}

#console {
  overflow-y: auto;
}

.trim {
  margin: 0px;
  padding: 0px;
  border: 0px;
}

.full {
  width: 100%;
  height: 100%;
}

.padded {
  padding: 10px;
}

.flex-container {
  display: flex;
}

.row {
  flex-direction: row;
}

.column {
  flex-direction: column;
}

.center {
  align-items: center;
}

.center-text {
  text-align: center;
}

.flex {
  flex-grow: 1;
  flex-shrink: 1;
}

.flex-wide {
  flex-grow: 4;
  flex-shrink: 1;
}

.flex-narrow {
  flex-grow: 1;
  flex-shrink: 4;
  width: 300px;
}

.rel {
  position: relative;
}

.abs {
  position: absolute;
}

.abs-full {
  position: absolute;
  top: 0px;
  right: 0px;
  bottom: 0px;
  left: 0px;
}

.lightbox-overlay {
  opacity: 0.5;
  background: #000;
}

.lightbox {
  padding: 20px;
  margin: 20px;
  background: #fff;
  border-radius: 5px;
}

.hide {
  visibility: hidden;
}