signal-desktop/stylesheets/_modal.scss

.modal {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  padding: 0 20px;
  z-index: 100;
  overflow-y: auto;

  .content {
    position: relative;
    max-width: 350px;
    margin: 100px auto;
    padding: 1em;
    background-color: $color-white;
    border-radius: $border-radius;
    overflow: auto;
    box-shadow: 0px 3px 5px 0px rgba(0, 0, 0, 0.2);
  }
}