riot-web/res/css/views/auth/_AuthPage.scss

/*
Copyright 2019 New Vector Ltd

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.
*/

.mx_AuthPage {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: auto;
    background-color: $authpage-bg-color;
}

.mx_AuthPage h2 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 8px;
}

.mx_AuthPage_modal {
    display: flex;
    margin: 100px auto auto;
    border-radius: 4px;
    // Not currently supported in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=1178765
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.33);
    background-color: $authpage-modal-bg-color;
}