style.css

body {
  font-family: "Source Sans Pro", sans-serif;
  margin: 0;
  color: #333;
}

.main-ui {
  max-width: 800px;
  margin: 0 auto;
}

.our-form {
  display: flex;
  justify-content: center;
}

.status {
  text-align: center;
  font-size: 0.85rem;
}

.boxes {
  display: flex;
  width: 100%;
}

.progress {
  border: 1px solid #c7c7c7;
  border-right: none;
  position: relative;
}

.progress-inner {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100%;
  background-color: rebeccapurple;
  opacity: 0.57;
  transform: scaleX(0);
  transform-origin: center left;
  transition: transform 0.4s ease-out;
}

.box {
  height: 40px;
  border-right: 1px solid #c7c7c7;
  flex: 1;
}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.75);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.33s ease-out;
  transform: scale(1.2);
}

.overlay-inner {
  text-align: center;
  max-width: 700px;
}

body.overlay-is-open .overlay {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}
body.overlay-is-open .main-ui {
  filter: blur(4px);
}

.problem {
  font-size: 5rem;
  margin: 0;
  text-align: center;
}

.end-message {
  font-size: 1.5rem;
  margin-top: 0;
}

.reset-button {
  font-size: 1.2rem;
  background-color: #004094;
  border: none;
  color: #fff;
  border-radius: 7px;
  padding: 12px 20px;
  display: inline-block;
  outline: none;
  cursor: pointer;
}