Reimplement min-width: auto

Source/core/css/themeInputMultipleFields.css

 /* Copyright 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 input[type="date" i],
 input[type="datetime-local" i],
 input[type="month" i],
 input[type="time" i],
 input[type="week" i] {
     align-items: center;
     display: -webkit-inline-flex;
     font-family: monospace;
     overflow: hidden;
     padding: 0;
     -webkit-padding-start: 1px;
 }
 
 input::-webkit-datetime-edit {
     flex: 1;
+    min-width: 0;
     -webkit-user-modify: read-only !important;
     display: inline-block;
     overflow: hidden;
 }
 
 input::-webkit-datetime-edit-fields-wrapper {
     -webkit-user-modify: read-only !important;
     display: inline-block;
     padding: 1px 0;
     white-space: pre;
@@ skipping 55 matching lines @@
 input[type="date" i]::-webkit-inner-spin-button,
 input[type="datetime" i]::-webkit-inner-spin-button,
 input[type="datetime-local" i]::-webkit-inner-spin-button,
 input[type="month" i]::-webkit-inner-spin-button,
 input[type="time" i]::-webkit-inner-spin-button,
 input[type="week" i]::-webkit-inner-spin-button {
     /* FIXME: Remove height. */
     height: 1.5em;
     -webkit-margin-start: 2px;
 }