Fix some missing :hover types

_sass/_base.scss

@@ -45,8 +45,8 @@ $theme-footer-color: hsl($theme-hue, 0%, 80%);
 $theme-code-background: hsl($theme-hue, 50%, 5%);
 $theme-button-background: hsl($theme-hue, 100%, 30.0%);
 $theme-button-background-active: hsl($theme-hue, 100%, 50%);
-$theme-button-color: hsl($theme-hue, 0%, 85%);
-$theme-button-color-active: hsl($theme-hue, 100%, 85%);
+$theme-button-color: hsl($theme-hue, 0%, 100%);
+$theme-button-color-active: hsl($theme-hue, 100%, 100%);
 
 * {
 	box-sizing: border-box;
@@ -70,6 +70,7 @@ body {
 }
 
 a,
+a:hover,
 a:visited,
 a:focus,
 a:active {
@@ -84,6 +85,7 @@ button {
 	cursor: pointer;
 }
 
+button:hover,
 button:focus,
 button:active,
 button:visited {

_sass/_breadcrumbs.scss

@@ -14,6 +14,7 @@
 	color: $theme-breadcrumbs-link-color;
 }
 
+.breadcrumbs > .crumb > a:hover,
 .breadcrumbs > .crumb > a:focus,
 .breadcrumbs > .crumb > a:active {
 	color: $theme-breadcrumbs-link-color-active;

_sass/_comments.scss

@@ -37,16 +37,6 @@
 	column-gap: .5rem;
 }
 
-.comments > .content > .privacy > button {
-	display: block;
-	padding: .5rem;
-	font-size: 1.5rem;
-
-	background: $theme-button-background;
-	color: $theme-button-color;
-	border: 0;
-}
-
 .comments > .content > .privacy > button {
 	display: block;
 	padding: .5rem;