src/third_party/devtools/front_end/changes/changesView.css

/*
 * Copyright (c) 2017 The Chromium Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
[slot=insertion-point-main]{
    flex-direction: column;
    display: flex;
}

[slot=insertion-point-sidebar] {
    overflow: auto;
}

.editor-container{
    flex: 1;
}

:focus.selected {
    background-color: var(--selection-bg-color);
    color: #FFF;
}

.CodeMirror-lines:not(:active) {
    cursor: default !important;
}

.CodeMirror-line:hover {
    cursor: default !important;
    background-color: rgba(0,0,255,0.05);
}

.CodeMirror .CodeMirror-linebackground.spacer {
    text-align: center;
    color: rgba(0, 0, 0, 0.5);
    background-color: rgba(0, 0, 255, 0.1);
}

.CodeMirror .equal > span > span {
    opacity: .5;
}

.CodeMirror .CodeMirror-selectedtext:not(.CodeMirror-persist-highlight) {
    opacity: 1.0;
}

.CodeMirror .CodeMirror-linebackground.addition, -theme-preserve {
    background-color: hsla(144, 55%, 49%, .2);
}

.CodeMirror .CodeMirror-linebackground.deletion, -theme-preserve {
    background-color: rgba(255, 0, 0, .2);
}

.CodeMirror .addition .cm-inner-diff:not(.CodeMirror-selectedtext), -theme-preserve {
    background-color: hsla(144, 55%, 49%, .3);
}

.CodeMirror .deletion .cm-inner-diff:not(.CodeMirror-selectedtext), -theme-preserve {
    background-color: rgba(255, 0, 0, .3);
}

.changes-toolbar {
    background-color: var(--toolbar-bg-color);
    border-top: var(--divider-border);
}