atom/static/editor.css

.editor {
  height: 100%;
  overflow: hidden;
  cursor: default;
  -webkit-user-select: none;
  -webkit-box-flex: 1;
  position: relative;
  z-index: 0;
  font-family: Inconsolata, Monaco, Courier;
}

.editor.mini {
  height: auto;
}

.editor .gutter {
  position: absolute;
  height: 100%;
  overflow: hidden;
  color: rgba(255, 255, 255, .3);
  text-align: right;
}

.editor .gutter .line-numbers {
  position: relative;
}

.editor .gutter .line-number {
  padding-left: 0.4em;
  padding-right: 0.8em;
}

.editor.focused .line-number.cursor-line {
  color: rgba(255, 255, 255, .6);
}

.editor.focused .line-number.cursor-line-no-selection,
.editor.focused .line.cursor-line {
  background-color: rgba(255, 255, 255, .12);
}

.editor.mini .gutter {
  display: none;
}

.editor .gutter.drop-shadow {
  -webkit-box-shadow: -2px 0px 10px 2px #222;
}

.editor .vertical-scrollbar {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 15px;
  overflow-y: auto;
  z-index: 1;
}

.editor .scroll-view {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-box-flex: 1;
}

.editor.mini .scroll-view {
  overflow: hidden;
}

.editor.soft-wrap .scroll-view {
  overflow-x: hidden;
}


.editor .underlayer, .editor .lines, .editor .overlayer {
  width: 100%;
  height: 100%;
}

.editor .underlayer {
  z-index: 0;
  position: absolute;
}

.editor .lines {
  position: relative;
  z-index: 1;
}

.editor .overlayer {
  z-index: 2;
  position: absolute;
}

.editor .line span {
  vertical-align: top;
}

.editor .cursor {
  position: absolute;
  border-left: 2px solid;
}

.editor.focused .cursor.blink-off {
  visibility: hidden;
}

.editor .hidden-input {
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  opacity: 0;
}

.editor .selection .region {
  position: absolute;
  pointer-events: none;
  z-index: -1;
}

@-webkit-keyframes highlight {
  from { background-color: rgba(100, 255, 100, 0.7); }
  to { background-color: null; }
}

.editor .highlighted.selection .region {
  -webkit-animation-name: highlight;
  -webkit-animation-duration: 1s;
  -webkit-animation-iteration-count: 1;
}

.editor .fold {
  background-color: #444;
}

.editor .fold.selected {
  background-color: #244;
}

.editor .invisible {
  opacity: 0.2;
}