提要动画最后出现空白

我正在为我的网站制作一个自动水平滚动提要部分,它正在工作,但小问题是,当动画最终从左到右到达时,会有一些空白,我不知道为什么有人能帮助我?

这个空白的单词是我用蓝色做的箭头,请帮助我解决这个问题。

/*insta feed css*/

.bg-black-gradient-feed {
  content: '';
  position: absolute;
  height: 50%;
  top: 50%;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient( transparent, rgba(0 0 0 / 100%) 100%);
  transition: all 2s ease-in-out;
  -webkit-transition: all 2s ease-in-out;
  opacity: 1;
  border-radius: 0px 0px 15px 15px;
}
.feed-wrapper {
    overflow: hidden;
    width: 100%;
    height: 600px;
}

.feed-track {
    display: flex;
    width: calc(210px * 8);
    animation: scroll 30s linear infinite;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(calc(-210px * 4));
    }
    50.01% {
        transform: translateX(calc(-210px * 4));
    }
    100% {
        transform: translateX(0);
    }
}

.feed-item {
    position: relative;
    width: 210px;
    border-radius: 15px;
    margin: 0 10px;
}

.feed-item img {
    border-radius: 15px;
}

.feed-item .feed-content {
    position: absolute;
    bottom: 0;
    width: 100%;
    font-size: 0.75rem;
    line-height: 1rem;
    padding: 1rem;
}

.feed-item .feed-content .content-wrapper {
    display: flex;
    flex-direction: column;
}

.feed-item .feed-content .content-wrapper div h2 {
    color: white;
    font-size: 0.75rem;
    line-height: 1.2;
    margin-bottom: 0.3rem;
}

.feed-item .feed-content .content-wrapper div span {
    display: block;
    color: white;
    font-size: 9px;
}
.top-60
{
    top:60px;
}
                <div class="feed-wrapper">
                    <div class="feed-track">
                        <div class="feed-item">
                            <img src="{{url('frontend/assets/images/feed1.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <!-- Repeat the feed items as needed -->
                        <div class="feed-item">
                            <img src="{{url('frontend/assets/images/feed2.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <div class="feed-item top-60">
                            <img src="{{url('frontend/assets/images/feed1.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <!-- Repeat the feed items as needed -->
                        <div class="feed-item">
                            <img src="{{url('frontend/assets/images/feed2.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <div class="feed-item top-60">
                            <img src="{{url('frontend/assets/images/feed1.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <!-- Repeat the feed items as needed -->
                        <div class="feed-item">
                            <img src="{{url('frontend/assets/images/feed2.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <div class="feed-item top-60">
                            <img src="{{url('frontend/assets/images/feed1.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <!-- Repeat the feed items as needed -->
                        <div class="feed-item">
                            <img src="{{url('frontend/assets/images/feed2.jpeg')}}" width="210" height="380">
                            <div class="bg-black-gradient-feed"></div>
                            <div class="feed-content">
                                <div class="content-wrapper">
                                    <div style="display: block;">
                                        <h2>Mercedes-Benz AMG: One Of</h2>
                                    </div>
                                    <div class="d-flex"><span>Posted By : f1rstmotors</span></div>
                                    <div class="d-flex"><span>Posted On : 1/May/2024</span></div>
                                </div>
                            </div>
                        </div>
                        <!-- Add more items if necessary -->
                    </div>
                </div>