Add reset button style

bookwyrm/static/css/bookwyrm.css

@@ -8,6 +8,36 @@ body {
     flex-direction: column;
 }
 
+button {
+    border: none;
+    margin: 0;
+    padding: 0;
+    width: auto;
+    overflow: visible;
+
+    background: transparent;
+
+    /* inherit font & color from ancestor */
+    color: inherit;
+    font: inherit;
+
+    /* Normalize `line-height`. Cannot be changed from `normal` in Firefox 4+. */
+    line-height: normal;
+
+    /* Corrects font smoothing for webkit */
+    -webkit-font-smoothing: inherit;
+    -moz-osx-font-smoothing: inherit;
+
+    /* Corrects inability to style clickable `input` types in iOS */
+    -webkit-appearance: none;
+}
+
+button::-moz-focus-inner {
+    /* Remove excess padding and border in Firefox 4+ */
+    border: 0;
+    padding: 0;
+}
+
 /* Better accessibility for keyboard users */
 *:focus-visible {
     outline-style: auto !important;