framework/less/lib/Modal.less

// ------------------------------------
// Modals

// Kill the scroll on the body
.modal-open {
  overflow: hidden;
}

// Modal background
.modal-backdrop {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: @zindex-modal-background;
  background-color: @overlay-bg;
  opacity: 0;
  .transition(0.2s opacity);

  &.in {
    opacity: 1;
  }
}

// Container that the modal scrolls within
.ModalManager {
  display: none;
  overflow: hidden;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: @zindex-modal;
  -webkit-overflow-scrolling: touch;

  // When fading in the modal, animate it to slide down
  .Modal {
    .scale(0.9);
    .transition-transform(0.2s ease-out);
  }
  &.in .Modal {
    .scale(1);
  }
}
.modal-open .ModalManager {
  overflow-x: hidden;
  overflow-y: auto;
}

// Shell div to position the modal with bottom padding
.Modal {
  position: relative;
  width: auto;
  margin: 10px;
  max-width: 600px;
}

// Actual modal
.Modal-content {
  position: relative;
  background-color: @body-bg;
  background-clip: padding-box;
  margin: 0 auto;
  overflow: hidden;
}

// Measure scrollbar width for padding body during modal show/hide
.modal-scrollbar-measure {
  position: absolute;
  top: -9999px;
  width: 50px;
  height: 50px;
  overflow: scroll;
}

.Modal-alert {
  text-align: center;

  .Alert {
    border-radius: 0;
  }
  .Alert-controls {
    margin: 0;
    display: block;
  }
}

.Modal-body {
  background-color: @control-bg;
  padding: 25px 30px;
  color: @control-color;

  .FormControl {
    background-color: @body-bg;
    color: @text-color;
  }

  .Form--centered {
    .helpText {
      font-size: 14px;
      line-height: 1.5em;
      margin-bottom: 25px;
      text-align: left;
    }
  }
}
.Modal-footer {
  border: 0;
  padding: 20px;
  text-align: center;
  color: @muted-color;
}
.Modal-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: fade(@body-bg, 90%);
  opacity: 0;
  pointer-events: none;
  border-radius: @border-radius;
  .transition(opacity 0.2s);

  &.active {
    opacity: 1;
    pointer-events: auto;
  }
}


@media @phone {
  .ModalManager.fade {
    opacity: 1;
  }
  .ModalManager {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    overflow: auto;
    .transition-transform(0.2s);
    .translate3d(0, 100vh, 0);

    &.in {
      -webkit-transform: none !important;
              transform: none !important;
    }
    &:before {
      content: " ";
      .header-background();
      position: absolute;
    }
  }
  .Modal {
    margin: 0;
    -webkit-transform: none !important;
            transform: none !important;
  }
  .Modal-content {
    border-radius: 0;
    border: 0;
    min-height: 100vh;
    padding-top: @header-height-phone;
    .box-shadow(none);
  }
  .Modal-header {
    padding: 0;
    border: 0;
    min-height: 0;
  }
}

@media @tablet-up {
  .Modal {
    margin: 120px auto;
  }
  .Modal-close {
    position: absolute;
    right: 10px;
    top: 10px;
    z-index: 1;
  }
  .Modal-content {

    border: 0;
    border-radius: @border-radius;
    .box-shadow(0 7px 15px @shadow-color);
  }
  .Modal--small {
    max-width: 375px;
  }
  .Modal--large {
    max-width: 800px;
  }
  .Modal-header {
    text-align: center;
    border: 0;
    padding: 25px;

    & h3 {
      font-size: 20px;
      font-weight: normal;
      margin: 0;
    }
  }
}