diff --git a/button.scss b/button.scss
index 3b68996..e22886d 100644
--- a/button.scss
+++ b/button.scss
@@ -18,6 +18,11 @@ button, input[type="submit"], input[type="button"], a.button {
     box-shadow: none;
     justify-content: center;
     align-items: center;
+    outline: 0;
+
+    &::-moz-focus-inner {
+        border: 0;
+    }
 
     &:hover, &:focus {
         background: var(--button-colored-background-hover);
diff --git a/input.scss b/input.scss
index 22e8697..24ce3d2 100644
--- a/input.scss
+++ b/input.scss
@@ -204,10 +204,6 @@ label.radio, label.checkbox {
             content: "";
             position: absolute;
             display: none;
-            top: 5px;
-            left: 5px;
-            width: 5px;
-            height: 5px;
         }
     }
 
@@ -222,8 +218,6 @@ label.radio {
         border-radius: 50%;
 
         &:after {
-            content: "";
-            position: absolute;
             top: 5px;
             left: 5px;
             width: 5px;
@@ -237,8 +231,6 @@ label.radio {
 label.checkbox {
     .checkmark {
         &:after {
-            content: "";
-            position: absolute;
             top: 2px;
             left: 4px;
             width: 4px;
diff --git a/styles.css b/styles.css
index a2ad137..70e8841 100644
--- a/styles.css
+++ b/styles.css
@@ -3726,11 +3726,7 @@ label.radio, label.checkbox {
     label.radio .checkmark:after, label.checkbox .checkmark:after {
       content: "";
       position: absolute;
-      display: none;
-      top: 5px;
-      left: 5px;
-      width: 5px;
-      height: 5px; }
+      display: none; }
   label.radio:hover input ~ .checkmark, label.checkbox:hover input ~ .checkmark {
     background-color: var(--input-icon-color);
     cursor: pointer; }
@@ -3738,8 +3734,6 @@ label.radio, label.checkbox {
 label.radio .checkmark {
   border-radius: 50%; }
   label.radio .checkmark:after {
-    content: "";
-    position: absolute;
     top: 5px;
     left: 5px;
     width: 5px;
@@ -3748,8 +3742,6 @@ label.radio .checkmark {
     background: #fff; }
 
 label.checkbox .checkmark:after {
-  content: "";
-  position: absolute;
   top: 2px;
   left: 4px;
   width: 4px;
@@ -3964,7 +3956,10 @@ button, input[type="submit"], input[type="button"], a.button {
   border: none;
   box-shadow: none;
   justify-content: center;
-  align-items: center; }
+  align-items: center;
+  outline: 0; }
+  button::-moz-focus-inner, input[type="submit"]::-moz-focus-inner, input[type="button"]::-moz-focus-inner, a.button::-moz-focus-inner {
+    border: 0; }
   button:hover, button:focus, input[type="submit"]:hover, input[type="submit"]:focus, input[type="button"]:hover, input[type="button"]:focus, a.button:hover, a.button:focus {
     background: var(--button-colored-background-hover); }