diff --git a/Lecture-Slides/Lecture26-BootstrapGridSystem.pdf b/Lecture-Slides/Lecture26-BootstrapGridSystem.pdf index 5c06ee734..d0ccb0742 100644 Binary files a/Lecture-Slides/Lecture26-BootstrapGridSystem.pdf and b/Lecture-Slides/Lecture26-BootstrapGridSystem.pdf differ