<div class="progress"></div>

body {
  padding: 40px;
  background-image: url(https://picsum.photos/1000/1000);
  background-size: cover;
}

.progress {
  border: 1px solid #2193b0;
  height: 30px;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.progress:before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 40%;
  background: linear-gradient(to right, #2193b0, #6dd5ed);
  border-top-right-radius: 10px;
  border-bottom-right-radius: 10px;
}