How does vue make the arrow scroll to the right and fade?

the effect is as follows:
these three arrows scroll to the right in turn, and I use the background image, which is added to the span tag, so how to achieve the most convenient?

HTML:
 <div class="arrowDiv" v-show="showArrowDiv">
          <span></span>
          <span></span>
          <span></span>
        </div>

Css3 css3-Animation javascript vue.js

Feb.24,2022

adjust opacity plus filter
adjust color directly with font
gradient

rgba, can adjust opacity.

http://jsrun.net/3ChKp/edit

three or four to implement, the change of position, the change of transparency

gif diagram is the most convenient

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