diff --git a/_layouts/default.html b/_layouts/default.html
index 83730c1..9ed5ae4 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -13,7 +13,7 @@
     {% include skip-links.html %}
 
     <div class="sidebar-toggle-wrapper">
-      <button class="toggle navicon-button larr">
+      <button class="toggle navicon-button larr" type="button">
         <span class="sidebar-toggle-label">{{ site.data.theme.t.menu | default: 'Menu' }}</span>
         <div class="navicon"></div>
       </button>
diff --git a/_sass/basically-basic/_navicons.scss b/_sass/basically-basic/_navicons.scss
index 47b7755..e5e74cd 100644
--- a/_sass/basically-basic/_navicons.scss
+++ b/_sass/basically-basic/_navicons.scss
@@ -11,6 +11,7 @@
   border: 0;
   outline: none;
   background-color: $navicon-nav-bg-close;
+  line-height: normal;
   cursor: pointer;
   -moz-user-select: none;
   -ms-user-select: none;
@@ -121,27 +122,4 @@
       transform-origin: right bottom;
     }
   }
-
-  /* × and + */
-  /* &.plus,*/
-  /* &.x {*/
-  /*   .navicon {*/
-  /*     background: transparent;*/
-
-  /*     &::before {*/
-  /*       -ms-transform: rotate(-45deg);*/
-  /*       transform: rotate(-45deg);*/
-  /*     }*/
-
-  /*     &::after {*/
-  /*       -ms-transform: rotate(45deg);*/
-  /*       transform: rotate(45deg);*/
-  /*     }*/
-  /*   }*/
-  /* }*/
-
-  /* &.plus {*/
-  /*   -ms-transform: scale($navicon-toggled-size) rotate(45deg);*/
-  /*   transform: scale($navicon-toggled-size) rotate(45deg);*/
-  /* }*/
 }
diff --git a/docs/_layouts/default.html b/docs/_layouts/default.html
index 83730c1..9ed5ae4 100644
--- a/docs/_layouts/default.html
+++ b/docs/_layouts/default.html
@@ -13,7 +13,7 @@
     {% include skip-links.html %}
 
     <div class="sidebar-toggle-wrapper">
-      <button class="toggle navicon-button larr">
+      <button class="toggle navicon-button larr" type="button">
         <span class="sidebar-toggle-label">{{ site.data.theme.t.menu | default: 'Menu' }}</span>
         <div class="navicon"></div>
       </button>
diff --git a/docs/_sass/basically-basic/_navicons.scss b/docs/_sass/basically-basic/_navicons.scss
index 47b7755..e5e74cd 100644
--- a/docs/_sass/basically-basic/_navicons.scss
+++ b/docs/_sass/basically-basic/_navicons.scss
@@ -11,6 +11,7 @@
   border: 0;
   outline: none;
   background-color: $navicon-nav-bg-close;
+  line-height: normal;
   cursor: pointer;
   -moz-user-select: none;
   -ms-user-select: none;
@@ -121,27 +122,4 @@
       transform-origin: right bottom;
     }
   }
-
-  /* × and + */
-  /* &.plus,*/
-  /* &.x {*/
-  /*   .navicon {*/
-  /*     background: transparent;*/
-
-  /*     &::before {*/
-  /*       -ms-transform: rotate(-45deg);*/
-  /*       transform: rotate(-45deg);*/
-  /*     }*/
-
-  /*     &::after {*/
-  /*       -ms-transform: rotate(45deg);*/
-  /*       transform: rotate(45deg);*/
-  /*     }*/
-  /*   }*/
-  /* }*/
-
-  /* &.plus {*/
-  /*   -ms-transform: scale($navicon-toggled-size) rotate(45deg);*/
-  /*   transform: scale($navicon-toggled-size) rotate(45deg);*/
-  /* }*/
 }