message: Add start styles for sv-progress block
diff: .sv-progress {
  + height: 0.3em;
  + background-color: $header-background-color;
  +}
  +.sv-progress__bar {
  + height: 100%;
  + min-width: 100px;
  + background-color: $main-color;
  + position: relative;
  + margin-top: 2em;
  + > span {
  + position: absolute;
  + top: -1.5em;
  + display: inline-block;
  + white-space: nowrap;
  }
  -.sv__progress__bar {
  }
  