修正

style.css

@@ -2683,21 +2683,19 @@ body #btn-a #mobile-btn {
 
 @media screen and (max-width: 767px) {
   .container #countdown {
-    width: 100vw;
+    width: 90vw;
+    margin: 0 auto;
   }
 }
 
 @media screen and (max-width: 400px) {
   .container #countdown {
+    width: 90vw;
+    margin: 0 auto;
     width: 100vw;
   }
 }
 
-.container #countdown ul {
-  padding-left: 0 !important;
-  margin: 0 !important;
-}
-
 .container li {
   display: inline-block;
   font-size: 1.5em;
@@ -2773,6 +2771,7 @@ li #seconds {
   li #minutes,
   li #seconds {
     padding: 0 3vw 0 3vw;
+    font-size: 1.7rem;
   }
 }
 

style.scss

@@ -1686,14 +1686,16 @@ body {
             text-align: left;
         }
         @media screen and(max-width:$moblie) {
-            width: 100vw;
+            width: 90vw;
+            margin: 0 auto;
         }
         @media screen and(max-width:400px) {
+            width: 90vw;
+            margin: 0 auto;
             width: 100vw;
         }
         ul {
-            padding-left: 0 !important;
-            margin: 0 !important;
+            
         }
         
     }
@@ -1752,6 +1754,7 @@ li {
         }
         @media screen and(max-width:400px) {
             padding: 0 3vw 0 3vw;
+            font-size: 1.7rem;
         }
     }
 }