Сергей Пантелеев

<div class="scale">
  <div class="scale__line" style="width: 40%"></div>
  <div class="scale__points">
    <span class="scale__point" style="left: 30%"></div>
    <span class="scale__point" style="left: 60%"></div>
  </div>
</div>

.scale {
  position: relative;
  height: 50px;
  background: linear-gradient(90deg, #e66465, #9198e5);
  width: 100%;
  transition: 0.5s width;
}
.scale--ended {
  width: 0;
}
.scale__line {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  background: #cacaca;
}
.scale__points {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}
.scale__point {
  width: 70px;
  height: 50px;
  position: absolute;
  top: 0;
  overflow: hidden;
}
.scale__point:after{
    content: '';
    display: block;
    position: absolute;
    left: 10px;
    top: 0;
    border-radius: 100%;
    width: 50px;
    height: 50px;
    box-shadow: 0px 0px 0px 50px #FFFFFF;
}