diff --git a/addons/website_slides/static/src/js/slides_embed.js b/addons/website_slides/static/src/js/slides_embed.js
index edcaca7eccb19d76d8ca3f6df87383934cf6e0fb..b5ea4325375b6757c23e0a78487d891c303478a2 100644
--- a/addons/website_slides/static/src/js/slides_embed.js
+++ b/addons/website_slides/static/src/js/slides_embed.js
@@ -32,6 +32,7 @@ $(document).ready(function () {
                 this.$('canvas').show();
                 this.$('#page_count').text(this.pdf_viewer.pdf_page_total);
                 this.$('#PDFViewerLoader').hide();
+                this.$('#PDFViewerLoader').toggleClass('d-flex');
                 if (this.pdf_viewer.pdf_page_total > 1) {
                     this.$('.o_slide_navigation_buttons').removeClass('hide');
                 }
diff --git a/addons/website_slides/static/src/scss/slides_slide_fullscreen.scss b/addons/website_slides/static/src/scss/slides_slide_fullscreen.scss
index b377c7c3ca2d5af27788823f06ef60023479d850..d4a5cbd710504f71fb97f4ecdd1bcbe1456ef09d 100644
--- a/addons/website_slides/static/src/scss/slides_slide_fullscreen.scss
+++ b/addons/website_slides/static/src/scss/slides_slide_fullscreen.scss
@@ -1,12 +1,6 @@
-$o-wslides-color-bg: desaturate(map-get($grays, "200"), 80%);
-$o-wslides-color-dark1: #47525f;
-$o-wslides-color-dark2: #1f262d;
-$o-wslides-color-dark3: #101216;
-$o-wslides-fs-side-width: 300px;
 
 $o-wslides-tabs-height: 36px;
 
-
 .o_wslides_fs_main {
     @include o-position-absolute(0,0,0,0);
     z-index: 2000;
diff --git a/addons/website_slides/static/src/scss/website_slides.scss b/addons/website_slides/static/src/scss/website_slides.scss
index 1a4814fd4acf86d5ae8e7c180ecefdf769e1aa18..9cbdef9fc877791d23df85cb4e5e8460a44c686f 100644
--- a/addons/website_slides/static/src/scss/website_slides.scss
+++ b/addons/website_slides/static/src/scss/website_slides.scss
@@ -5,6 +5,13 @@ $MAX-Z-INDEX : 2147483647 !default;
 $gray-50: #f4f4f4 !default;
 $o-enterprise-radient-color: #62495B !default;
 
+$o-wslides-color-bg: desaturate(map-get($grays, "200"), 80%);
+$o-wslides-color-dark1: #47525f;
+$o-wslides-color-dark2: #1f262d;
+$o-wslides-color-dark3: #101216;
+$o-wslides-fs-side-width: 300px;
+
+
 .o_wslides_gradient {
     background-image: linear-gradient(120deg, #875A7B, darken(#875A7B, 10%));
 }
@@ -331,95 +338,27 @@ $o-enterprise-radient-color: #62495B !default;
     }
 }
 
-// Old brol to clean someday
+// Embed PDFViewer
 // **************************************************
+#PDFViewer.o_wslides_fs_pdf_viewer {
+    background-image: linear-gradient(120deg, $o-wslides-color-dark2, $o-wslides-color-dark3);
 
-.oe_slides_panel_footer .fa, .oe_slide_js_embed_option_link{
-    color : theme-color('primary');
-    cursor: pointer;
-}
-
-.oe_slide_embed_option {
-    position: absolute;
-    padding: 30px 30px 30px 30px;
-    top: 0px;
-    left: 0px;
-    right: 0px;
-    bottom: 0px;
-    background-color: $body-bg;
-    opacity: 1;
-    display:none;
-    overflow-y: auto !important;
-}
-
-.oe_slides_apart_small {
-    height: 60px;
-    width: 90px;
-    object-fit: cover;
-    object-position: top;
-}
-
-.oe_slides_statistics_title {
-    border-bottom: 1px solid $nav-tabs-border-color;
-    padding-bottom: 5px;
-}
-.oe_slides_transcript {
-    overflow-y: auto;
-    max-height: 500px;
-}
-
-// Thumbnails
-.oe_slides_ellipsis {
-    white-space: nowrap;
-    width: 100%;
-    overflow: hidden;
-    text-overflow: ellipsis
-}
-
-.o_slide_preview {
-    max-height: 160px;
-    overflow: hidden;
-}
+    #PDFViewerNav {
+        background-image: linear-gradient(120deg, $o-wslides-color-dark1, $o-wslides-color-dark2);
+    }
 
-// Suggested slides grid
-.oe_slides_suggestion_caption {
-    position:absolute;
-    top:0;
-    right:0;
-    background:rgba(10, 10, 10, 0.75);
-    width:100%;
-    height:100%;
-    display: none;
-    text-align:center;
-    color:#fff !important;
-    z-index:2;
-}
+    .oe_slides_panel_footer a, .oe_slides_share_bar a {
+        @include o-hover-text-color(rgba(white, 0.7), white);
 
-.oe_slides_suggestion_media {
-    margin-top: 10px;
-    position: relative;
-}
-.oe_slides_suggestion_media img {
-    height: 33%;
-    width: 100%;
-    overflow: hidden;
-}
+        &.disabled {
+            @include o-hover-text-color(rgba(white, 0.2), rgba(white, 0.2));
+            cursor: default;
+        }
+    }
 
-// PDF Viewer Loader
-.oe_slides_loader{
-    position: relative;
-    width: 100%; /* for IE 6 */
-}
-.oe_slides_loader h4{
-    position: absolute;
-    bottom: 20px;
-    left: 0;
-    width: 35%;
-
-    color: white;
-    background: rgb(0, 0, 0); /* fallback color */
-    background: rgba(0, 0, 0, 0.7);
-    padding: 10px;
+    .oe_slide_embed_option {
+        @include o-position-absolute(0,0,0,0);
+    }
 }
 
 // Slide display
diff --git a/addons/website_slides/views/website_slides_templates_lesson_embed.xml b/addons/website_slides/views/website_slides_templates_lesson_embed.xml
index ac8ecbde8ecb0115d54aa7026f61617e4e88d1d6..286fd52fd5fdac946266314e5f8c169d00ae2be1 100644
--- a/addons/website_slides/views/website_slides_templates_lesson_embed.xml
+++ b/addons/website_slides/views/website_slides_templates_lesson_embed.xml
@@ -15,32 +15,28 @@
                     <t t-call-assets="website_slides.slide_embed_assets" t-css="false"/>
                 </head>
                 <body>
-                    <div id="PDFViewer" class="d-flex flex-column h-100 border">
+                    <div id="PDFViewer" class="o_wslides_fs_pdf_viewer d-flex flex-column h-100">
                         <!-- PDF Viewer Header : contains the name, and the share links -->
-                        <div t-if="is_embedded" class="navbar-default oe_slides_share_bar">
+                        <div t-if="is_embedded" class="oe_slides_share_bar">
                             <div class="container-fluid">
-                                <div class="row">
-                                    <div class="col-lg-8 col-4 text-left">
+                                <div class="row align-items-center">
+                                    <div class="col">
                                         <div class="oe_slides_ellipsis">
                                             <a target="_new" t-att-href="slide.website_url">
                                                 <span  t-esc="slide.name" t-att-title="slide.name"/>
                                             </a>
                                         </div>
                                     </div>
-                                    <div class="col-lg-1 col-2 text-right">
-                                        <b class="oe_slide_js_embed_option_link" data-slide-option-id="#slide_share"><i class="fa fa-share-alt"></i> Share</b>
-                                    </div>
-                                    <div class="col-lg-1 col-2 text-right">
-                                        <b class="oe_slide_js_embed_option_link" data-slide-option-id="#slide_email"><i class="fa fa-envelope"></i> Email</b>
-                                    </div>
-                                    <div class="col-lg-1 col-2 text-right">
-                                        <b class="oe_slide_js_embed_option_link" data-slide-option-id="#slide_embed"><i class="fa fa-code"></i> Embed</b>
+                                    <div class="col flex-grow-0 d-flex text-nowrap small">
+                                        <a href="#" class="oe_slide_js_embed_option_link" data-slide-option-id="#slide_share"><i class="fa fa-share-alt"/> Share</a>
+                                        <a href="#" class="oe_slide_js_embed_option_link mx-4" data-slide-option-id="#slide_email"><i class="fa fa-envelope"/> Email</a>
+                                        <a href="#" class="oe_slide_js_embed_option_link" data-slide-option-id="#slide_embed"><i class="fa fa-code"/> Embed</a>
                                     </div>
                                 </div>
                             </div>
                         </div>
                         <!--  PDF Viewer Body : contains the canvas, the loader, or the image-->
-                        <div id="PDFSlideViewer" class="text-center position-relative flex-grow-1" style="height: 0;"
+                        <div id="PDFSlideViewer" class="d-flex align-items-start position-relative flex-grow-1 overflow-auto" style="height: 0;"
                                 t-attf-data-slideid="#{slide.id}"
                                 t-attf-data-slideurl="/slides/slide/#{slug(slide)}/pdf_content"
                                 t-attf-data-downloadable="#{False}"
@@ -56,59 +52,64 @@
                                     <t t-call="website_slides.slide_social_embed"/>
                                 </div>
                             </t>
-                            <div id="slide_suggest" class="oe_slide_embed_option">
-                                <t t-foreach="related_slides" t-as="suggest_slide">
-                                    <div class="col-4 oe_slides_suggestion_media">
-                                        <a t-att-href="suggest_slide.website_url" target="_new">
-                                            <div class="oe_slides_suggestion_caption">
-                                                <h4><t t-esc="suggest_slide.name"/></h4>
+                            <div id="slide_suggest" class="oe_slide_embed_option bg-300 container-fluid overflow-auto d-none">
+                                <div class="row">
+                                    <t t-foreach="related_slides" t-as="suggest_slide">
+                                        <div class="col-6 col-md-4 col-lg-3 oe_slides_suggestion_media">
+                                            <div class="card mb-3">
+                                                <a t-att-href="suggest_slide.website_url" target="_new" class="card-img-top embed-responsive embed-responsive-16by9">
+                                                    <img t-attf-src="/web/image/slide.slide/#{suggest_slide.id}/image" class="card-img-top embed-responsive-item" t-att-alt="suggest_slide.name"/>
+                                                </a>
+                                                <div class="card-body">
+                                                    <h6 class="card-title">
+                                                        <a t-att-href="suggest_slide.website_url" target="_new">
+                                                            <t t-esc="suggest_slide.name"/>
+                                                        </a>
+                                                    </h6>
+                                                    <div class="oe_slides_suggestion_caption"/>
+                                                </div>
                                             </div>
-                                            <span class="oe-image-thumbnail">
-                                                <img class="img-fluid" t-attf-src="/web/image/slide.slide/#{suggest_slide.id}/image_small" alt="suggest_slide.name"/>
-                                            </span>
-                                        </a>
-
-                                    </div>
-                                </t>
+                                        </div>
+                                    </t>
+                                </div>
                             </div>
                             <t t-if="slide.slide_type in ('presentation', 'document')">
-                                <div id="PDFViewerLoader" class="oe_slides_loader">
-                                    <img class="img-fluid" t-attf-src="/web/image/slide.slide/#{slide.id}/image_large" style="margin:auto;height:100%" alt="suggest_slide.name"/>
-                                    <h4 class="text-center">
-                                        <i class="fa fa-spinner fa-spin"></i> Loading ...
-                                    </h4>
+                                <div id="PDFViewerLoader" class="oe_slides_loader d-flex justify-content-center align-items-center position-absolute h-100 w-100">
+                                    <div class="toast show">
+                                        <div class="toast-header">
+                                            <i class="fa fa-circle-o-notch fa-spin mr-2"/><b>Loading...</b>
+                                        </div>
+                                        <div class="toast-body p-0">
+                                            <img class="img-fluid w-100" t-attf-src="/web/image/slide.slide/#{slide.id}/image_large"/>
+                                        </div>
+                                    </div>
                                 </div>
-                                <canvas id="PDFViewerCanvas" class="img-fluid" style="margin: auto; height: 100%; display: none;"></canvas>
+                                <canvas id="PDFViewerCanvas" class="img-fluid w-100" style="display: none;"></canvas>
                             </t>
                             <t t-if="slide.slide_type == 'infographic'">
                                 <img t-attf-src="/web/image/slide.slide/#{slide.id}/image" class="img-fluid" style="width: 100%" alt="Slide image"/>
                             </t>
                         </div>
                         <!-- Fixed bottom navbar -->
-                        <div class="pt-2 pb-2 bg-light" role="navigation" t-if="slide.slide_type in ('presentation', 'document')">
+                        <div id="PDFViewerNav" class="pt-2 pb-2 bg-light text-white" role="navigation" t-if="slide.slide_type in ('presentation', 'document')">
                             <div class="container-fluid oe_slides_panel_footer">
-                                <div class="row">
-                                    <div class="col-auto mr-auto text-left mt-2 mb-2">
-                                        <input type="number" class="text-center" id="page_number"></input> / <span id="page_count"></span>
+                                <div class="row align-items-center">
+                                    <div class="col-2 flex-grow-0">
+                                        <div class="input-group input-group-sm flex-nowrap" style="max-width: 100px">
+                                            <input type="number" class="form-control text-center" id="page_number" style="min-width: 60px"/>
+                                            <div class="input-group-append">
+                                                <span class="input-group-text" id="page_count"/>
+                                            </div>
+                                        </div>
                                     </div>
-                                    <div class="col-auto o_slide_navigation_buttons mt-2 mb-2">
-                                        <span id="first" class="ml-2 mr-2" title="First slide" role="img" aria-label="First slide">
-                                            <i class="fa fa-step-backward fa-2x"></i>
-                                        </span>
-                                        <a id="previous" class="ml-2 mr-2" title="Previous slide" aria-label="Previous slide" role="button">
-                                            <i class="fa fa-arrow-circle-left fa-2x"></i>
-                                        </a>
-                                        <a id="next" class="ml-2 mr-2" title="Next slide" aria-label="Next slide" role="button">
-                                            <i class="fa fa-arrow-circle-right fa-2x"></i>
-                                        </a>
-                                        <a id="last" class="ml-2 mr-2" title="Last slide" aria-label="Last slide" role="button">
-                                            <i class="fa fa-step-forward fa-2x"></i>
-                                        </a>
+                                    <div class="col text-center">
+                                        <a id="first" href="#" class="text-decoration-none mr-1 mr-sm-2" title="First slide" role="button" aria-label="First slide"> <i class="fa fa-step-backward"/> </a>
+                                        <a id="previous" href="#" class="text-decoration-none mx-1 mx-sm-2" title="Previous slide" aria-label="Previous slide" role="button"> <i class="fa fa-arrow-circle-left"/> </a>
+                                        <a id="next" href="#" class="text-decoration-none mx-1 mx-sm-2" title="Next slide" aria-label="Next slide" role="button"> <i class="fa fa-arrow-circle-right"/> </a>
+                                        <a id="last" href="#" class="text-decoration-none ml-1 ml-sm-2" title="Last slide" aria-label="Last slide" role="button"> <i class="fa fa-step-forward"/> </a>
                                     </div>
-                                    <div class="col-auto text-right ml-auto mt-2 mb-2">
-                                        <span id="fullscreen" title="View fullscreen" role="img" aria-label="Fullscreen">
-                                            <i class="fa fa-arrows-alt fa-2x"></i>
-                                        </span>
+                                    <div class="col-2 flex-grow-0 text-right">
+                                        <a id="fullscreen" href="#" title="View fullscreen" role="img" aria-label="Fullscreen"> <i class="fa fa-arrows-alt"/> </a>
                                     </div>
                                 </div>
                             </div>