try to fix problem css on blog and doc part

assets/scss/common/_custom.scss

@@ -29,6 +29,7 @@
   .nav-item a:hover{
     color: $tetra-green;
   }
+
 a{
     color: $tetra-green
   }

assets/scss/common/_variables-custom.scss

@@ -8,3 +8,12 @@ $tetra-green : #5a8264;
 // Dark mode
 $tetra-green : #5a8264;
 
+// Put your custom SCSS variables here
+
+// Light mode
+$primary: #5a8264; // affects ToC links only, though `$link-color: $primary;`
+$link-color: #5a8264; // affects other links, except primary button variants
+
+// Dark mode
+$link-color-dark: #5a8264; // affect all links, except primary button variants
+$button-color-dark: $link-color-dark; // affects primary button variants