diff --git a/src/public/enter_school.html b/src/public/enter_school.html
index fc84808..86f0e06 100644
--- a/src/public/enter_school.html
+++ b/src/public/enter_school.html
@@ -20,7 +20,7 @@
         }
 
         .tb_button.hover {
-            borer: 2px outset #def;
+            border: 2px outset #def;
             background-color: #f8f8f8 !important;
         }
 
diff --git a/src/public/math_abi.html b/src/public/math_abi.html
index fa470eb..c7c6f8d 100644
--- a/src/public/math_abi.html
+++ b/src/public/math_abi.html
@@ -49,7 +49,7 @@
         }
 
         .tb_button.hover {
-            borer: 2px outset #def;
+            border: 2px outset #def;
             background-color: #f8f8f8 !important;
         }
 
diff --git a/src/public/start.html b/src/public/start.html
index 85d073e..9b34010 100644
--- a/src/public/start.html
+++ b/src/public/start.html
@@ -29,7 +29,7 @@
     }
 
     .tb_button.hover {
-      borer: 2px outset #def;
+      border: 2px outset #def;
       background-color: #f8f8f8 !important;
     }
 
diff --git a/src/public/userpass.html b/src/public/userpass.html
index d1116de..b1034a4 100644
--- a/src/public/userpass.html
+++ b/src/public/userpass.html
@@ -64,7 +64,7 @@
         }
 
         .tb_button.hover {
-            borer: 2px outset #def;
+            border: 2px outset #def;
             background-color: #f8f8f8 !important;
         }