diff --git a/TangerineUI-cherry.css b/TangerineUI-cherry.css
index 1e7ef23..b22e394 100644
--- a/TangerineUI-cherry.css
+++ b/TangerineUI-cherry.css
@@ -3279,7 +3279,8 @@ div[tabindex="-1"] + div[tabindex="-1"] > .status__wrapper > .status-reply.statu
 .app-body .column-header .column-header__back-button {
     padding-right: 16px;
 }
-.app-body .column-header :is(> button, .column-header__back-button) {
+.app-body .column-header > button,
+.app-body .column-header .column-header__back-button {
     font-weight: bold;
 }
 @media screen and (max-width:1174px) {
diff --git a/TangerineUI-purple.css b/TangerineUI-purple.css
index ed6e87a..475519b 100644
--- a/TangerineUI-purple.css
+++ b/TangerineUI-purple.css
@@ -3279,7 +3279,8 @@ div[tabindex="-1"] + div[tabindex="-1"] > .status__wrapper > .status-reply.statu
 .app-body .column-header .column-header__back-button {
     padding-right: 16px;
 }
-.app-body .column-header :is(> button, .column-header__back-button) {
+.app-body .column-header > button,
+.app-body .column-header .column-header__back-button {
     font-weight: bold;
 }
 @media screen and (max-width:1174px) {
diff --git a/TangerineUI.css b/TangerineUI.css
index 1394de5..dfd7d71 100644
--- a/TangerineUI.css
+++ b/TangerineUI.css
@@ -3279,7 +3279,8 @@ div[tabindex="-1"] + div[tabindex="-1"] > .status__wrapper > .status-reply.statu
 .app-body .column-header .column-header__back-button {
     padding-right: 16px;
 }
-.app-body .column-header :is(> button, .column-header__back-button) {
+.app-body .column-header > button,
+.app-body .column-header .column-header__back-button {
     font-weight: bold;
 }
 @media screen and (max-width:1174px) {