fix firefox zclip bug

public/css/gogs.css

@@ -817,6 +817,10 @@ html, body {
     margin-bottom: 15px;
 }
 
+#repo-clone .zclip {
+    left: auto !important;
+}
+
 /* #source */
 #source, #commits {
     margin-top: -20px;
@@ -1085,6 +1089,10 @@ html, body {
     margin-top: 4px;
 }
 
+.guide-box .zclip {
+    left: auto !important;
+}
+
 .diff-head-box h4 {
     margin-top: 0;
     margin-bottom: 0;

templates/repo/single_bare.tmpl

@@ -16,7 +16,7 @@
                         <button class="btn btn-default" data-link="{{.CloneLink.HTTPS}}" type="button">HTTPS</button>
                     </span>
                     <input type="text" class="form-control clone-group-url" id="guide-clone-url" value="" readonly/>
-                    <span class="input-group-btn">
+                    <span class="input-group-btn" style="position: relative">
                         <button class="btn btn-default" type="button" data-toggle="tooltip" title="copy to clipboard" data-placement="top" data-init="copy" data-copy-val="val" data-copy-from="#guide-clone-url"><i class="fa fa-copy"></i></button>
                     </span>
                 </div>