### Other notable changes

* Kubernetes json deserializer is now case-sensitive to restore compatibility with pre-1.8 servers. ([#65157](https://github.com/kubernetes/kubernetes/pull/65157), [@caesarxuchao](https://github.com/caesarxuchao))
    * If your config files contains fields with wrong case, the config files will be now invalid.

z-index: 1;\n  height: $custom-file-height;\n  padding: $custom-file-padding-y $custom-file-padding-x;\n  overflow: hidden;\n  font-family: $custom-file-font-family;\n  font-weight: $custom-file-font-weight;\n  line-height: $custom-file-line-height;\n  color: $custom-file-color;\n  background-color: $custom-file-bg;\n  border: $custom-file-border-width solid $custom-file-border-color;\n  @include border-radius($custom-file-border-radius);\n  @include box-shadow($custom-file-box-shadow);\n\n  &::after {\n...