OnlyOffice-Backend/target/classes/static/css/editor.css

/**
 *
 * (c) Copyright Ascensio System SIA 2023
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

html {
    height: 100%;
    width: 100%;
}

body {
    background: #fff;
    color: #333;
    font-family: Arial, Tahoma,sans-serif;
    font-size: 12px;
    font-weight: normal;
    height: 100%;
    margin: 0;
    overflow-y: hidden;
    padding: 0;
    text-decoration: none;
}

.form {
    height: 100%;
}

div {
    margin: 0;
    padding: 0;
}