diff --git a/slides/223015b/00-intro.md b/slides/223015b/00-intro.md
index 77c0f1c..86754d2 100644
--- a/slides/223015b/00-intro.md
+++ b/slides/223015b/00-intro.md
@@ -40,11 +40,13 @@ pre code {
   color: inherit;
 }
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-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
 }
diff --git a/slides/223015b/01-grundlagen-text-audio.md b/slides/223015b/01-grundlagen-text-audio.md
index 830991f..230956e 100644
--- a/slides/223015b/01-grundlagen-text-audio.md
+++ b/slides/223015b/01-grundlagen-text-audio.md
@@ -40,11 +40,13 @@ pre code {
   color: inherit;
 }
 code {
-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
 }
diff --git a/slides/223015b/02-bild-audio-video.md b/slides/223015b/02-bild-audio-video.md
index 053b9d4..24e77f7 100644
--- a/slides/223015b/02-bild-audio-video.md
+++ b/slides/223015b/02-bild-audio-video.md
@@ -40,11 +40,13 @@ pre code {
   color: inherit;
 }
 code {
-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
 }
diff --git a/slides/223015b/03-speichermedien-schnittstellen.md b/slides/223015b/03-speichermedien-schnittstellen.md
index 796ae94..5fca827 100644
--- a/slides/223015b/03-speichermedien-schnittstellen.md
+++ b/slides/223015b/03-speichermedien-schnittstellen.md
@@ -40,11 +40,13 @@ pre code {
   color: inherit;
 }
 code {
-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
 }
diff --git a/slides/223015b/04-distribution-apis-zukunft.md b/slides/223015b/04-distribution-apis-zukunft.md
index bb2496a..e97e520 100644
--- a/slides/223015b/04-distribution-apis-zukunft.md
+++ b/slides/223015b/04-distribution-apis-zukunft.md
@@ -40,11 +40,13 @@ pre code {
   color: inherit;
 }
 code {
-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
 }
diff --git a/slides/223015b/05-vertiefung-offene-fragen.md b/slides/223015b/05-vertiefung-offene-fragen.md
index e833572..d53003f 100644
--- a/slides/223015b/05-vertiefung-offene-fragen.md
+++ b/slides/223015b/05-vertiefung-offene-fragen.md
@@ -40,11 +40,13 @@ pre code {
   color: inherit;
 }
 code {
-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
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diff --git a/slides/223015b/klausurfolien.md b/slides/223015b/klausurfolien.md
index b7eda47..1f509a0 100644
--- a/slides/223015b/klausurfolien.md
+++ b/slides/223015b/klausurfolien.md
@@ -39,11 +39,13 @@ pre code {
   color: inherit;
 }
 code {
-  background: #1a1a2e;
-  color: #5fb3e4;
+  background: #0f0f23;
   padding: 0.15em 0.4em;
   border-radius: 4px;
+  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
 }
+section code:not(.hljs) { color: #5fb3e4 !important; }
+section code.hljs { color: #f8f8f8 !important; }
 a {
   color: var(--color-highlight);
 }