diff --git a/hmdooris/static/main.css b/hmdooris/static/main.css
index 1431eee..81c3e98 100644
--- a/hmdooris/static/main.css
+++ b/hmdooris/static/main.css
@@ -58,6 +58,7 @@ body {
     padding: 0.1rem 0.5rem;
     border-radius: 2rem;
     background-color: white;
+    color: black;
 }
 
 .lock__line button.lock__button__lock {
@@ -70,6 +71,7 @@ body {
 
 .lock__line button.lock__button__lock:disabled, .lock__line button.lock__button__unlock:disabled {
     background-color: #ccc;
+    color: #444;
 }
 
 .lock__line .lock__state-icon {