diff --git a/generator/_assets/styles/less/header.less b/generator/_assets/styles/less/header.less
index cd7f170f2..664352854 100755
--- a/generator/_assets/styles/less/header.less
+++ b/generator/_assets/styles/less/header.less
@@ -41,7 +41,8 @@
       flex-direction: column;
       background: #FFFFFF;
       z-index: 10;
-      width: ~"calc(433px + (243 - 433) / (320 - 1023) * (100vw - 1023px))";
+      // (243 - 433) / (320 - 1023) = 0.27
+      width: calc(~'433px + (0.27 * (100vw - 1023px))');
       min-width: 24.3rem;
       order: 10;
       right: 0;