diff --git a/swh/web/assets/src/bundles/browse/browse-utils.js b/swh/web/assets/src/bundles/browse/browse-utils.js
index e720b166..d7be7839 100644
--- a/swh/web/assets/src/bundles/browse/browse-utils.js
+++ b/swh/web/assets/src/bundles/browse/browse-utils.js
@@ -1,62 +1,70 @@
 /**
  * Copyright (C) 2018  The Software Heritage developers
  * See the AUTHORS file at the top-level directory of this distribution
  * License: GNU Affero General Public License version 3, or any later version
  * See top-level LICENSE file for more information
  */
 
 $(document).ready(() => {
 
   $('.dropdown-submenu a.dropdown-item').on('click', e => {
     $(e.target).next('div').toggle();
     if ($(e.target).next('div').css('display') !== 'none') {
       $(e.target).focus();
     } else {
       $(e.target).blur();
     }
     e.stopPropagation();
     e.preventDefault();
   });
 
   $('.swh-popover-toggler').popover({
     boundary: 'viewport',
     container: 'body',
     html: true,
+    placement: function() {
+      const width = $(window).width();
+      if (width < 768) {
+        return 'top';
+      } else {
+        return 'right';
+      }
+    },
     template: `<div class="popover" role="tooltip">
                  <div class="arrow"></div>
                  <h3 class="popover-header"></h3>
                  <div class="popover-body swh-popover"></div>
                </div>`,
     content: function() {
       var content = $(this).attr('data-popover-content');
       return $(content).children('.popover-body').remove().html();
     },
     title: function() {
       var title = $(this).attr('data-popover-content');
       return $(title).children('.popover-heading').html();
     },
     offset: '50vh',
     sanitize: false
   });
 
   $('.swh-vault-menu a.dropdown-item').on('click', e => {
     $('.swh-popover-toggler').popover('hide');
   });
 
   $('.swh-popover-toggler').on('show.bs.popover', (e) => {
     $(`.swh-popover-toggler:not(#${e.currentTarget.id})`).popover('hide');
     $('.swh-vault-menu .dropdown-menu').hide();
   });
 
   $('.swh-actions-dropdown').on('hide.bs.dropdown', () => {
     $('.swh-vault-menu .dropdown-menu').hide();
     $('.swh-popover-toggler').popover('hide');
   });
 
   $('body').on('click', e => {
     if ($(e.target).parents('.swh-popover').length) {
       e.stopPropagation();
     }
   });
 
 });
diff --git a/swh/web/assets/src/bundles/browse/browse.css b/swh/web/assets/src/bundles/browse/browse.css
index bc8b623e..5ee06ff4 100644
--- a/swh/web/assets/src/bundles/browse/browse.css
+++ b/swh/web/assets/src/bundles/browse/browse.css
@@ -1,140 +1,145 @@
 /**
  * Copyright (C) 2018  The Software Heritage developers
  * See the AUTHORS file at the top-level directory of this distribution
  * License: GNU Affero General Public License version 3, or any later version
  * See top-level LICENSE file for more information
  */
 
 .swh-browse-nav li a {
     border-radius: 4px;
 }
 
 .scrollable-menu {
     max-height: 180px;
     overflow-x: hidden;
 }
 
 .swh-corner-ribbon {
     width: 200px;
     background: #fecd1b;
     color: #e20026;
     position: absolute;
     text-align: center;
     line-height: 50px;
     letter-spacing: 1px;
     box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
     top: 55px;
     right: -50px;
     left: auto;
     transform: rotate(45deg);
     z-index: 2000;
 }
 
 .swh-loading {
     display: none;
     text-align: center;
     margin-top: 10px;
 }
 
 .swh-loading.show {
     display: block;
 }
 
 .swh-metadata-table-row {
     border-top: 1px solid #ddd !important;
 }
 
 .swh-metadata-table-key {
     min-width: 200px;
     max-width: 200px;
     width: 200px;
 }
 
 .swh-metadata-table-value pre {
     white-space: pre-wrap;
 }
 
 .swh-table-cell-text-overflow {
     white-space: nowrap;
     overflow: hidden;
     text-overflow: ellipsis;
 }
 
 .swh-directory-table {
     margin-bottom: 0;
 }
 
 .swh-directory-table td {
     border-top: 1px solid #ddd !important;
 }
 
 .swh-title-color {
     color: #e20026;
 }
 
 .swh-log-entry-message {
     min-width: 440px;
     max-width: 440px;
     width: 440px;
 }
 
 .swh-popover {
     max-height: 50vh;
-    max-width: 80vw;
     overflow-y: auto;
     overflow-x: auto;
     padding: 0;
     padding-right: 1.4em;
 }
 
+@media screen and (min-width: 768px) {
+    .swh-popover {
+        max-width: 80vh;
+    }
+}
+
 .swh-search-pagination {
     margin-top: 5px;
 }
 
 .ui-slideouttab-panel {
     z-index: 30000;
 }
 
 #swh-identifiers {
     width: 70vw;
     top: 0;
     border: 1px solid #e20026;
 }
 
 #swh-identifiers .handle {
     background-color: #e20026;
     border: 1px solid #e20026;
     color: white;
     padding-top: 0.1em;
     padding-bottom: 0.1em;
 }
 
 #swh-identifiers-content {
     height: 100%;
     overflow: auto;
 }
 
 .swh-empty-snapshot {
     white-space: pre-line;
 }
 
 td.swh-branch-name {
     max-width: 300px;
 }
 
 td.swh-branch-message {
     min-width: 500px;
     max-width: 500px;
 }
 
 td.swh-branch-date {
     min-width: 250px;
 }
 
 @media screen and (max-width: 600px) {
     .swh-corner-ribbon {
         line-height: 30px;
         top: 53px;
         right: -65px;
     }
 }
diff --git a/swh/web/assets/src/bundles/webapp/webapp.css b/swh/web/assets/src/bundles/webapp/webapp.css
index de7170cc..76cf4a68 100644
--- a/swh/web/assets/src/bundles/webapp/webapp.css
+++ b/swh/web/assets/src/bundles/webapp/webapp.css
@@ -1,489 +1,489 @@
 /**
  * Copyright (C) 2018-2019  The Software Heritage developers
  * See the AUTHORS file at the top-level directory of this distribution
  * License: GNU Affero General Public License version 3, or any later version
  * See top-level LICENSE file for more information
  */
 
 html {
     height: 100%;
     overflow-x: hidden;
 }
 
 body {
     min-height: 100%;
     margin: 0;
     position: relative;
     padding-bottom: 120px;
 }
 
 a:active,
 a.active {
     outline: none;
 }
 
 code {
     background-color: #f9f2f4;
 }
 
 pre code {
     background-color: transparent;
 }
 
 footer {
     background-color: #262626;
     color: #fff;
     font-size: 0.8rem;
     position: absolute;
     bottom: 0;
     width: 100%;
     padding-top: 20px;
     padding-bottom: 20px;
 }
 
 footer a,
 footer a:visited,
 footer a:hover {
     color: #fecd1b;
 }
 
 footer a:hover {
     text-decoration: underline;
 }
 
 .link-color {
     color: #fecd1b;
 }
 
 pre {
     background-color: #f5f5f5;
     border: 1px solid #ccc;
     border-radius: 4px;
     padding: 9.5px;
     font-size: 0.8rem;
 }
 
 .btn.active {
     background-color: #e7e7e7;
 }
 
 .card {
     margin-bottom: 5px !important;
     overflow-x: auto;
 }
 
 .navbar-brand {
     padding: 5px;
     margin-right: 0;
 }
 
 .table {
     margin-bottom: 0;
 }
 
 .swh-table thead {
     background-color: #f2f4f5;
     border-top: 1px solid rgba(0, 0, 0, 0.2);
     font-weight: normal;
 }
 
 .swh-table-striped th {
     border-top: none;
 }
 
 .swh-table-striped tbody tr:nth-child(even) {
     background-color: #f2f4f5;
 }
 
 .swh-table-striped tbody tr:nth-child(odd) {
     background-color: #fff;
 }
 
 .swh-web-app-link a {
     text-decoration: none;
     border: none;
 }
 
 .swh-web-app-link:hover {
     background-color: #efeff2;
 }
 
 .table > thead > tr > th {
     border-top: none;
     border-bottom: 1px solid #e20026;
 }
 
 .table > tbody > tr > td {
     border-style: none;
 }
 
 .sitename .first-word,
 .sitename .second-word {
     color: rgba(0, 0, 0, 0.75);
     font-weight: normal;
     font-size: 1.2rem;
 }
 
 .sitename .first-word {
     font-family: 'Alegreya Sans', sans-serif;
 }
 
 .sitename .second-word {
     font-family: 'Alegreya', serif;
 }
 
 .swh-counter {
     font-size: 150%;
 }
 
 .swh-http-error {
     margin: 0 auto;
     text-align: center;
 }
 
 .swh-http-error-head {
     color: #2d353c;
     font-size: 30px;
 }
 
 .swh-http-error-code {
     bottom: 60%;
     color: #2d353c;
     font-size: 96px;
     line-height: 80px;
     margin-bottom: 10px !important;
 }
 
 .swh-http-error-desc {
     font-size: 12px;
     color: #647788;
     text-align: center;
 }
 
 .swh-http-error-desc pre {
     display: inline-block;
     text-align: left;
     max-width: 800px;
     white-space: pre-wrap;
 }
 
 .popover {
-    max-width: 100%;
-    z-index: 2000;
+    max-width: 97%;
+    z-index: 40000;
 }
 
 .modal {
     text-align: center;
     padding: 0 !important;
 }
 
 .modal::before {
     content: '';
     display: inline-block;
     height: 100%;
     vertical-align: middle;
     margin-right: -4px;
 }
 
 .modal-dialog {
     display: inline-block;
     text-align: left;
     vertical-align: middle;
 }
 
 .dropdown-submenu {
     position: relative;
 }
 
 .dropdown-submenu .dropdown-menu {
     top: 0;
     left: -100%;
     margin-top: -5px;
     margin-left: -2px;
 }
 
 .dropdown-item:hover,
 .dropdown-item:focus {
     background-color: rgba(0, 0, 0, 0.1);
 }
 
 a.dropdown-left::before {
     content: "\f0d9";
     font-family: 'FontAwesome';
     display: block;
     width: 20px;
     height: 20px;
     float: left;
     margin-left: 0;
 }
 
 #swh-navbar {
     border-top-style: none;
     border-left-style: none;
     border-right-style: none;
     border-bottom-style: solid;
     border-bottom-width: 5px;
     border-image: linear-gradient(to right, rgb(226, 0, 38) 0%, rgb(254, 205, 27) 100%) 1 1 1 1;
     width: 100%;
     padding: 5px;
     margin-bottom: 10px;
     margin-top: 30px;
     justify-content: normal;
     flex-wrap: nowrap;
     height: 72px;
     overflow: hidden;
 }
 
 #back-to-top {
     display: none;
     position: fixed;
     bottom: 30px;
     right: 30px;
     z-index: 10;
 }
 
 #back-to-top a img {
     display: block;
     width: 32px;
     height: 32px;
     background-size: 32px 32px;
     text-indent: -999px;
     overflow: hidden;
 }
 
 .swh-top-bar {
     direction: ltr;
     height: 30px;
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     z-index: 99999;
     background-color: #262626;
     color: #fff;
     text-align: center;
     font-size: 14px;
 }
 
 .swh-top-bar ul {
     margin-top: 4px;
     padding-left: 0;
     white-space: nowrap;
 }
 
 .swh-top-bar li {
     display: inline-block;
     margin-left: 10px;
     margin-right: 10px;
 }
 
 .swh-top-bar a,
 .swh-top-bar a:visited {
     color: white;
 }
 
 .swh-top-bar a.swh-current-site,
 .swh-top-bar a.swh-current-site:visited {
     color: #fecd1b;
 }
 
 .swh-position-right {
     position: absolute;
     right: 0;
 }
 
 .swh-donate-link {
     border: 1px solid #fecd1b;
     background-color: #e20026;
     color: white !important;
     padding: 3px;
     border-radius: 3px;
 }
 
 .swh-navbar-content h4 {
     padding-top: 7px;
 }
 
 .swh-navbar-content .bread-crumbs {
     display: block;
     margin-left: -40px;
 }
 
 .swh-navbar-content .bread-crumbs li.bc-no-root {
     padding-top: 7px;
 }
 
 .main-sidebar {
     margin-top: 30px;
 }
 
 .content-wrapper {
     background: none;
 }
 
 .brand-image {
     max-height: 40px;
 }
 
 .brand-link {
     padding-top: 18.5px;
     padding-bottom: 18px;
     padding-left: 4px;
     border-bottom: 5px solid #e20026 !important;
 }
 
 .navbar-header a,
 ul.dropdown-menu a,
 ul.navbar-nav a,
 ul.nav-sidebar a {
     border-bottom-style: none;
     color: #323232;
 }
 
 .swh-sidebar .nav-link.active {
     color: #323232 !important;
     background-color: #e7e7e7 !important;
 }
 
 .swh-image-error {
     width: 80px;
     height: auto;
 }
 
 @media (max-width: 600px) {
     .swh-image-error {
         width: 40px;
         height: auto;
     }
 
     .swh-navbar-content h4 {
         font-size: 1rem;
     }
 
     .swh-donate-link {
         display: none;
     }
 }
 
 .form-check-label {
     padding-top: 4px;
 }
 
 .swh-id-option {
     display: inline-block;
     margin-right: 5px;
     line-height: 1rem;
 }
 
 .nav-pills .nav-link:not(.active):hover {
     color: rgba(0, 0, 0, 0.55);
 }
 
 .swh-heading-color {
     color: #e20026 !important;
 }
 
 .sidebar-mini.sidebar-collapse .main-sidebar:hover {
     width: 4.6rem;
 }
 
 .sidebar-mini.sidebar-collapse .main-sidebar:hover .user-panel > .info,
 .sidebar-mini.sidebar-collapse .main-sidebar:hover .nav-sidebar .nav-link p,
 .sidebar-mini.sidebar-collapse .main-sidebar:hover .brand-text {
     visibility: hidden !important;
 }
 
 .sidebar .nav-link p,
 .main-sidebar .brand-text,
 .sidebar .user-panel .info {
     transition: none;
 }
 
 .sidebar-mini.sidebar-mini.sidebar-collapse .sidebar {
     padding-right: 0;
 }
 
 .swh-words-logo {
     position: absolute;
     top: 0;
     left: 0;
     width: 73px;
     height: 73px;
     text-align: center;
     font-size: 10pt;
     color: rgba(0, 0, 0, 0.75);
 }
 
 .swh-words-logo:hover {
     text-decoration: none;
 }
 
 .swh-words-logo-swh {
     line-height: 1;
     padding-top: 13px;
     visibility: hidden;
 }
 
 hr.swh-faded-line {
     border: 0;
     height: 1px;
     background-image: linear-gradient(to left, #f0f0f0, #8c8b8b, #f0f0f0);
 }
 
 .swh-readme-txt pre {
     background: none;
     border: none;
 }
 
 .swh-coverage-col {
     padding-left: 10px;
     padding-right: 10px;
 }
 
 .swh-coverage {
     height: calc(65px + 1em);
     padding-top: 0.3rem;
     border: none;
 }
 
 .swh-coverage a {
     text-decoration: none;
 }
 
 .swh-coverage-logo {
     display: block;
     width: 100%;
     height: 50px;
     margin-left: auto;
     margin-right: auto;
     object-fit: contain;
 
     /* polyfill for old browsers, see https://github.com/bfred-it/object-fit-images */
     font-family: 'object-fit: contain;';
 }
 
 .swh-coverage-list {
     width: 100%;
     height: 320px;
     border: none;
 }
 
 tr.swh-tr-hover-highlight:hover td {
     background: #ededed;
 }
 
 tr.swh-api-doc-route a {
     text-decoration: none;
 }
 
 .swh-apidoc .col {
     margin: 10px;
 }
 
 a.toggle-col {
     text-decoration: none;
 }
 
 a.toggle-col.col-hidden {
     text-decoration: line-through;
 }