Update to vue3 support

Author: lian-yue

Diff for: dist/vue-upload-component.js

@@ -1,7 +1,31 @@
 
-.file-uploads{overflow:hidden;position:relative;text-align:center;display:inline-block
+.file-uploads {
+  overflow: hidden;
+  position: relative;
+  text-align: center;
+  display: inline-block;
 }
-.file-uploads.file-uploads-html4 input,.file-uploads.file-uploads-html5 label{background:#fff;opacity:0;font-size:20em;z-index:1;top:0;left:0;right:0;bottom:0;position:absolute;width:100%;height:100%
+.file-uploads.file-uploads-html4 input, .file-uploads.file-uploads-html5 label {
+  /* background fix ie  click */
+  background: #fff;
+  opacity: 0;
+  font-size: 20em;
+  z-index: 1;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+}
+.file-uploads.file-uploads-html5 input, .file-uploads.file-uploads-html4 label {
+  /* background fix ie  click */
+  background: rgba(255, 255, 255, 0);
+  overflow: hidden;
+  position: fixed;
+  width: 1px;
+  height: 1px;
+  z-index: -1;
+  opacity: 0;
 }
-.file-uploads.file-uploads-html4 label,.file-uploads.file-uploads-html5 input{background:rgba(255,255,255,0);overflow:hidden;position:fixed;width:1px;height:1px;z-index:-1;opacity:0
-}