modules/frontend/app/components/progress-line/style.scss

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

progress-line {
    @import 'public/stylesheets/variables';

    --background-color: transparent;
    --foreground-color: #{$ignite-brand-primary};

    height: 1px;
    position: relative;
    display: block;
    overflow: hidden;

    @keyframes progress-line-indeterminate {
        0% {
            left: -33%;
            width: 33%;
        }
        100% {
            left: 100%;
            width: 33%;
        }
    }

    @keyframes progress-line-indeterminate-to-complete {
        0% {
            opacity: 0;
        }
        100% {
            opacity: 1;
        }
    }

    .progress-line__background {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        display: block;
        background: var(--background-color);
    }

    .progress-line__foreground {
        position: absolute;
        top: 0;
        bottom: 0;
        content: "";
        display: block;
        background: var(--foreground-color);
    }

    &.progress-line__complete .progress-line__foreground {
        animation-name: progress-line-indeterminate-to-complete;
        animation-iteration-count: 1;
        animation-duration: 0.2s;
        left: 0;
        right: 0;
        width: 100%;
    }

    &.progress-line__indeterminate .progress-line__foreground {
        animation-name: progress-line-indeterminate;
        animation-iteration-count: infinite;
        animation-duration: 2s;
    }
}