masto-fe/app/javascript/styles/doodle.scss

$doodleBg: #d9e1e8;
.doodle-modal {
  @extend .boost-modal;
  width: unset;
}

.doodle-modal__container {
  background: $doodleBg;
  text-align: center;
  line-height: 0; // remove weird gap under canvas
  canvas {
    border: 5px solid $doodleBg;
  }
}

.doodle-modal__action-bar {
  @extend .boost-modal__action-bar;

  .filler {
    flex-grow: 1;
    margin: 0;
    padding: 0;
  }

  .doodle-toolbar {
    line-height: 1;

    display: flex;
    flex-direction: column;
    flex-grow: 0;
    justify-content: space-around;

    &.with-inputs {
      label {
        display: inline-block;
        width: 70px;
        text-align: right;
        margin-right: 2px;
      }

      input[type="number"],input[type="text"] {
        width: 40px;
      }
      span.val {
        display: inline-block;
        text-align: left;
        width: 50px;
      }
    }
  }

  .doodle-palette {
    padding-right: 0 !important;
    border: 1px solid black;
    line-height: .2rem;
    flex-grow: 0;
    background: white;

    button {
      appearance: none;
      width: 1rem;
      height: 1rem;
      margin: 0; padding: 0;
      text-align: center;
      color: black;
      text-shadow: 0 0 1px white;
      cursor: pointer;
      box-shadow: inset 0 0 1px rgba(white, .5);
      border: 1px solid black;
      outline-offset:-1px;

      &.foreground {
        outline: 1px dashed white;
      }

      &.background {
        outline: 1px dashed red;
      }

      &.foreground.background {
        outline: 1px dashed red;
        border-color: white;
      }
    }
  }
}