.container {
    margin: 100px auto;
    width: 500px;
    text-align: center;
}

.progress {
    padding: 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 6px;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.25), 0 1px rgba(255, 255, 255, 0.08);
}

.progress-bar {
    height: 18px;
    background-color: #ee303c;
    border-radius: 4px;
    transition: 0.4s linear;
    transition-property: width, background-color;
}

.progress-striped .progress-bar {
    background-color: #FCBC51;
    width: 100%;
    background-image: linear-gradient(45deg, #fca311 25%, transparent 25%, transparent 50%, #fca311 50%, #fca311 75%, transparent 75%, transparent);
    animation: progressAnimationStrike 6s;
}

@keyframes progressAnimationStrike {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.progress2 {
    border-radius: 5px;
    background: #cccccc;
}

.progress-bar2 {
    height: 10px;
    border-radius: 5px;
    background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.05));
    transition: 0.4s linear;
    transition-property: width, background-color;
}

.progress-moved .progress-bar2 {
    width: 85%;
    background-color: #cd281e;
    animation: progressAnimation 6s;
}

@keyframes progressAnimation {
    0% {
        width: 5%;
        background-color: rgba(205, 40, 30, .2);
    }
    100% {
        width: 85%;
        background-color: #cd281e;
    }
}

.progress-bar3 {
    height: 18px;
    border-radius: 4px;
    background-image: linear-gradient(to right, #4cd964, #5ac8fa, #007aff, #7DC8E8, #5856d6, #ff2d55);
    transition: 0.4s linear;
    transition-property: width, background-color;
}

.progress-infinite .progress-bar3 {
    width: 100%;
    background-image: linear-gradient(to right, #4cd964, #5ac8fa, #007aff, #7DC8E8, #5856d6, #ff2d55);
    animation: colorAnimation 1s infinite;
}

@keyframes colorAnimation {
    0% {
        background-image: linear-gradient(to right, #4cd964, #5ac8fa, #007aff, #7DC8E8, #5856d6, #ff2d55);
    }
    20% {
        background-image: linear-gradient(to right, #5ac8fa, #007aff, #7DC8E8, #5856d6, #ff2d55, #4cd964);
    }
    40% {
        background-image: linear-gradient(to right, #007aff, #7DC8E8, #5856d6, #ff2d55, #4cd964, #5ac8fa);
    }
    60% {
        background-image: linear-gradient(to right, #7DC8E8, #5856d6, #ff2d55, #4cd964, #5ac8fa, #007aff);
    }
    100% {
        background-image: linear-gradient(to right, #5856d6, #ff2d55, #4cd964, #5ac8fa, #007aff, #7DC8E8);
    }
}