pico/scss/components/_progress.scss

/**
 * Progress
 */


// Reboot based on :
// - normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css
// - sanitize.css v12.0.1 | CC0 1.0 Universal | github.com/csstools/sanitize.css
// ––––––––––––––––––––

// 1. Add the correct display in Edge 18- and IE
// 2. Add the correct vertical alignment in Chrome, Edge, and Firefox
progress {
 display: inline-block; // 1
 vertical-align: baseline; // 2
}


// Pico
// ––––––––––––––––––––
progress {

  // Reset the default appearance
  -webkit-appearance: none;
    -moz-appearance: none;
         appearance: none;

  // Styles
  display: inline-block;
  width: 100%;
  height: .5rem;
  margin-bottom: calc(var(--spacing-typography) / 2);
  overflow: hidden;

  // Remove Firefox and Opera border
  border: 0;
  border-radius: var(--block-round);
  background-color: var(--muted-background);

  // IE10 uses `color` to set the bar background-color
  color: var(--primary);

  &::-webkit-progress-bar {
    border-radius: var(--block-round);
    background: transparent;
  }
  &[value]::-webkit-progress-value {
    background-color: var(--primary);
  }
  &::-moz-progress-bar {
    background-color: var(--primary);
  }

  &:indeterminate {
    background: var(--muted-background) linear-gradient(to right, var(--primary) 30%, var(--muted-background) 30%) top left / 150% 150% no-repeat;
    animation: progress-indeterminate 1s linear infinite;

    &[value]::-webkit-progress-value {
      background-color: transparent;
    }
    &::-moz-progress-bar {
      background-color: transparent;
    }
  }
}

@keyframes progress-indeterminate {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}