Vulcan/packages/vulcan-forms-upload/lib/Upload.scss

.upload-field {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.dropzone-base {
  border: 4px dashed #ccc;
  padding: 30px;
  transition: "all 0.5s";
  width: 250px;
  cursor: pointer;
  color: #ccc;
  margin-right: 10px;
  position: relative;
}

.upload-uploading{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  span{
    display: block;
    font-size: 1.5rem;
  }
}

.dropzone-active {
  border: #4FC47F 4px solid;
}

.dropzone-reject {
  border: #DD3A0A 4px solid;
}

.upload-images{
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  // justify-content: space-between;
  // align-items: center;
}
.upload-image{
  margin-right: 10px;
  a, img{
    display: block;
    text-align: center;
  }
  a{
    font-size: 0.8rem;
  }
}

.upload-image-contents{
  position: relative;
}

.upload-loading{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.8);
  display: flex;
  justify-content: center;
  align-items: center;
}

.upload-disabled{
  .dropzone-base{
    background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23cccccc' fill-opacity='0.4' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
  }
}

.upload-image-error{
  .upload-image-contents{
    position: relative;
    &:after{
      content: " ";
      display: block;
      position: absolute;
      height: 100%;
      width: 100%;
      top: 0;
      right: 0;
      left: 0;
      right: 0;
      background-color: rgba(255, 255, 255, 0.6);
      background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ff0000' fill-opacity='0.4' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
    }
  }
}