diff --git a/bigbluebutton-html5/imports/ui/components/audio/audio-modal/component.jsx b/bigbluebutton-html5/imports/ui/components/audio/audio-modal/component.jsx
index cc9e6a3c83d84f9d7ef8ec705452f51e4ae50469..437b8944759e5fc850baf685a1c8b1c02d9aab67 100755
--- a/bigbluebutton-html5/imports/ui/components/audio/audio-modal/component.jsx
+++ b/bigbluebutton-html5/imports/ui/components/audio/audio-modal/component.jsx
@@ -1,6 +1,6 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
-import ModalBase from '/imports/ui/components/modal/base/component';
+import Modal from '/imports/ui/components/modal/simple/component';
 import Button from '/imports/ui/components/button/component';
 import { defineMessages, injectIntl, intlShape } from 'react-intl';
 import { styles } from './styles';
@@ -9,6 +9,7 @@ import AudioSettings from '../audio-settings/component';
 import EchoTest from '../echo-test/component';
 import Help from '../help/component';
 
+
 const propTypes = {
   intl: intlShape.isRequired,
   closeModal: PropTypes.func.isRequired,
@@ -392,10 +393,11 @@ class AudioModal extends Component {
     return (
       <span>
         {showPermissionsOvelay ? <PermissionsOverlay /> : null}
-        <ModalBase
+        <Modal
           overlayClassName={styles.overlay}
           className={styles.modal}
           onRequestClose={this.closeModal}
+          hideBorder
         >
           {!this.skipAudioOptions() ?
 
@@ -410,22 +412,13 @@ class AudioModal extends Component {
                   intl.formatMessage(intlMessages.audioChoiceLabel)}
                 </h3>
             }
-              <Button
-                data-test="modalBaseCloseButton"
-                className={styles.closeBtn}
-                label={intl.formatMessage(intlMessages.closeLabel)}
-                icon="close"
-                size="md"
-                hideLabel
-                onClick={this.closeModal}
-              />
             </header>
             : null
           }
           <div className={styles.content}>
             {this.renderContent()}
           </div>
-        </ModalBase>
+        </Modal>
       </span>
     );
   }
diff --git a/bigbluebutton-html5/imports/ui/components/audio/audio-modal/styles.scss b/bigbluebutton-html5/imports/ui/components/audio/audio-modal/styles.scss
index a5befabadac8058464856104c6857e08f831a1dc..c305dd7affa5fe315a1428f7559b875267f95ce3 100755
--- a/bigbluebutton-html5/imports/ui/components/audio/audio-modal/styles.scss
+++ b/bigbluebutton-html5/imports/ui/components/audio/audio-modal/styles.scss
@@ -118,6 +118,7 @@
   text-align: center;
   font-weight: 400;
   font-size: 1.3rem;
+  color: var(--color-background);
   white-space: normal;
 
   @include mq($small-only) {
diff --git a/bigbluebutton-html5/imports/ui/components/lock-viewers/component.jsx b/bigbluebutton-html5/imports/ui/components/lock-viewers/component.jsx
index 7c89ec1f1bbd035f3a1316caded8e3081dc9efb3..0844a19521843756429e3a6dc849cbaf6051ede1 100755
--- a/bigbluebutton-html5/imports/ui/components/lock-viewers/component.jsx
+++ b/bigbluebutton-html5/imports/ui/components/lock-viewers/component.jsx
@@ -1,9 +1,8 @@
 import React, { Component } from 'react';
 import { defineMessages, injectIntl } from 'react-intl';
-import Button from '/imports/ui/components/button/component';
 import Toggle from '/imports/ui/components/switch/component';
 import cx from 'classnames';
-import ModalBase from '/imports/ui/components/modal/base/component';
+import Modal from '/imports/ui/components/modal/simple/component';
 import { styles } from './styles';
 
 const intlMessages = defineMessages({
@@ -75,24 +74,16 @@ class LockViewersComponent extends Component {
     const { intl, meeting } = this.props;
 
     return (
-      <ModalBase
+      <Modal
         overlayClassName={styles.overlay}
         className={styles.modal}
         onRequestClose={this.closeModal}
+        hideBorder
       >
 
         <div className={styles.container}>
           <div className={styles.header}>
             <div className={styles.title}>{intl.formatMessage(intlMessages.lockViewersTitle)}</div>
-            <Button
-              data-test="modalBaseCloseButton"
-              className={styles.closeBtn}
-              label={intl.formatMessage(intlMessages.closeLabel)}
-              icon="close"
-              size="md"
-              hideLabel
-              onClick={this.closeModal}
-            />
           </div>
           <div className={styles.description}>
             {`${intl.formatMessage(intlMessages.lockViewersDescription)}`}
@@ -243,7 +234,7 @@ class LockViewersComponent extends Component {
             </div>
           </div>
         </div>
-      </ModalBase>
+      </Modal>
     );
   }
 }
diff --git a/bigbluebutton-html5/imports/ui/components/lock-viewers/styles.scss b/bigbluebutton-html5/imports/ui/components/lock-viewers/styles.scss
index 078b36e6daa2ef8be0ca1eaad6c887953eda040e..d853bc994fa7b827e4f86b8cac0465c61c0b3b7d 100755
--- a/bigbluebutton-html5/imports/ui/components/lock-viewers/styles.scss
+++ b/bigbluebutton-html5/imports/ui/components/lock-viewers/styles.scss
@@ -9,7 +9,6 @@
 }
 
 .title {
-  position: relative;
   left: var(--title-position-left);
   color: var(--color-gray-dark);
   font-weight: bold;
@@ -24,6 +23,7 @@
 
 .container {
   margin: var(--modal-margin);
+  margin-top: 0;
   margin-bottom: var(--lg-padding-x);
 }
 
diff --git a/bigbluebutton-html5/imports/ui/components/modal/simple/component.jsx b/bigbluebutton-html5/imports/ui/components/modal/simple/component.jsx
index 8c1ff95ce4ebf987cc2a0ef756add92400247c26..0310964efa5a54aa4f7c01fbf45481ebf7db3efc 100644
--- a/bigbluebutton-html5/imports/ui/components/modal/simple/component.jsx
+++ b/bigbluebutton-html5/imports/ui/components/modal/simple/component.jsx
@@ -6,7 +6,7 @@ import ModalBase, { withModalState } from '../base/component';
 import { styles } from './styles';
 
 const propTypes = {
-  title: PropTypes.string.isRequired,
+  title: PropTypes.string,
   dismiss: PropTypes.shape({
     callback: PropTypes.func,
     label: PropTypes.string.isRequired,
@@ -36,6 +36,7 @@ class ModalSimple extends Component {
   render() {
     const {
       title,
+      hideBorder,
       dismiss,
       className,
       modalisOpen,
@@ -50,18 +51,29 @@ class ModalSimple extends Component {
         contentLabel={title}
         {...otherProps}
       >
-        <header className={styles.header}>
+        {hideBorder ? <header className={styles.headerNoBorder}>
           <h1 className={styles.title}>{title}</h1>
           <Button
             className={styles.dismiss}
             label={dismiss.label}
-            icon={'close'}
+            icon="close"
             circle
             hideLabel
             onClick={this.handleDismiss}
-            aria-describedby={'modalDismissDescription'}
+            aria-describedby="modalDismissDescription"
           />
-        </header>
+        </header> : <header className={styles.header}>
+            <h1 className={styles.title}>{title}</h1>
+            <Button
+              className={styles.dismiss}
+              label={dismiss.label}
+              icon="close"
+              circle
+              hideLabel
+              onClick={this.handleDismiss}
+              aria-describedby="modalDismissDescription"
+            />
+          </header>}
         <div className={styles.content}>
           {this.props.children}
         </div>
diff --git a/bigbluebutton-html5/imports/ui/components/modal/simple/styles.scss b/bigbluebutton-html5/imports/ui/components/modal/simple/styles.scss
index 082858dac0c7af25a33560a68ef26ae9b1f17776..dc3f9c01a8340f341cbe45977cdd95bee8f004a4 100644
--- a/bigbluebutton-html5/imports/ui/components/modal/simple/styles.scss
+++ b/bigbluebutton-html5/imports/ui/components/modal/simple/styles.scss
@@ -22,6 +22,11 @@
   flex-shrink: 0;
 }
 
+.headerNoBorder {
+  display: flex;
+  flex-shrink: 0;
+}
+
 .title {
   @extend %text-elipsis;
   flex: 1;
diff --git a/bigbluebutton-html5/imports/ui/components/video-preview/component.jsx b/bigbluebutton-html5/imports/ui/components/video-preview/component.jsx
index afcbab35d91f317622f5274a71b8f4005ad75540..927aa400bf7d8788f2015158315fbfb00bb1a3fc 100644
--- a/bigbluebutton-html5/imports/ui/components/video-preview/component.jsx
+++ b/bigbluebutton-html5/imports/ui/components/video-preview/component.jsx
@@ -2,9 +2,9 @@ import PropTypes from 'prop-types';
 import React, { Component } from 'react';
 import { defineMessages, injectIntl, intlShape } from 'react-intl';
 import Button from '/imports/ui/components/button/component';
-import ModalBase from '/imports/ui/components/modal/base/component';
 import { notify } from '/imports/ui/services/notification';
 import logger from '/imports/startup/client/logger';
+import Modal from '/imports/ui/components/modal/simple/component';
 import { styles } from './styles';
 
 const VIDEO_CONSTRAINTS = Meteor.settings.public.kurento.cameraConstraints;
@@ -175,82 +175,69 @@ class VideoPreview extends Component {
     } = this.props;
 
     return (
-      <span>
-        <ModalBase
-          overlayClassName={styles.overlay}
-          className={styles.modal}
-          onRequestClose={this.handleProceed}
-        >
-          <header
-            className={styles.header}
-          >
-            <Button
-              className={styles.closeBtn}
-              label={intl.formatMessage(intlMessages.closeLabel)}
-              icon="close"
-              size="md"
-              hideLabel
-              onClick={this.handleProceed}
+      <Modal
+        overlayClassName={styles.overlay}
+        className={styles.modal}
+        onRequestClose={this.handleProceed}
+        hideBorder
+      >
+        <div className={styles.title}>
+          {intl.formatMessage(intlMessages.webcamSettingsTitle)}
+        </div>
+        <div className={styles.content}>
+          <div className={styles.col}>
+            <video
+              id="preview"
+              className={styles.preview}
+              ref={(ref) => { this.video = ref; }}
+              autoPlay
+              playsInline
             />
-          </header>
-          <h3 className={styles.title}>
-            {intl.formatMessage(intlMessages.webcamSettingsTitle)}
-          </h3>
-          <div className={styles.content}>
-            <div className={styles.col}>
-              <video
-                id="preview"
-                className={styles.preview}
-                ref={(ref) => { this.video = ref; }}
-                autoPlay
-                playsInline
-              />
-            </div>
-            <div className={styles.options}>
-              <label className={styles.label}>
-                {intl.formatMessage(intlMessages.cameraLabel)}
-              </label>
-              {this.state.availableWebcams && this.state.availableWebcams.length > 0 ? (
-                <select
-                  value={this.state.webcamDeviceId}
-                  className={styles.select}
-                  onChange={this.handleSelectWebcam.bind(this)}
-                >
-                  <option disabled>
-                    {intl.formatMessage(intlMessages.webcamOptionLabel)}
+          </div>
+          <div className={styles.options}>
+            <label className={styles.label}>
+              {intl.formatMessage(intlMessages.cameraLabel)}
+            </label>
+            {this.state.availableWebcams && this.state.availableWebcams.length > 0 ? (
+              <select
+                value={this.state.webcamDeviceId}
+                className={styles.select}
+                onChange={this.handleSelectWebcam.bind(this)}
+              >
+                <option disabled>
+                  {intl.formatMessage(intlMessages.webcamOptionLabel)}
+                </option>
+                {this.state.availableWebcams.map((webcam, index) => (
+                  <option key={index} value={webcam.deviceId}>
+                    {webcam.label}
                   </option>
-                  {this.state.availableWebcams.map((webcam, index) => (
-                    <option key={index} value={webcam.deviceId}>
-                      {webcam.label}
-                    </option>
                   ))}
-                </select>
+              </select>
               ) :
-                <select
-                  className={styles.select}
-                >
-                  <option disabled>
-                    {intl.formatMessage(intlMessages.webcamNotFoundLabel)}
-                  </option>
-                </select>}
-            </div>
+              <select
+                className={styles.select}
+              >
+                <option disabled>
+                  {intl.formatMessage(intlMessages.webcamNotFoundLabel)}
+                </option>
+              </select>}
           </div>
-          <div className={styles.footer}>
-            <div className={styles.actions}>
-              <Button
-                label={intl.formatMessage(intlMessages.cancelLabel)}
-                onClick={this.handleProceed}
-              />
-              <Button
-                color="primary"
-                label={intl.formatMessage(intlMessages.startSharingLabel)}
-                onClick={() => this.handleStartSharing()}
-                disabled={this.state.isStartSharingDisabled}
-              />
-            </div>
+        </div>
+        <div className={styles.footer}>
+          <div className={styles.actions}>
+            <Button
+              label={intl.formatMessage(intlMessages.cancelLabel)}
+              onClick={this.handleProceed}
+            />
+            <Button
+              color="primary"
+              label={intl.formatMessage(intlMessages.startSharingLabel)}
+              onClick={() => this.handleStartSharing()}
+              disabled={this.state.isStartSharingDisabled}
+            />
           </div>
-        </ModalBase>
-      </span>
+        </div>
+      </Modal>
     );
   }
 }
diff --git a/bigbluebutton-html5/imports/ui/components/video-preview/styles.scss b/bigbluebutton-html5/imports/ui/components/video-preview/styles.scss
index b21e8649b2ef12679e1dcd8159a7d8afb27ece00..33134178b8670575f47ab99868984d582aa7d24c 100644
--- a/bigbluebutton-html5/imports/ui/components/video-preview/styles.scss
+++ b/bigbluebutton-html5/imports/ui/components/video-preview/styles.scss
@@ -73,6 +73,8 @@
 }
 
 .title {
+  display: block;
+  color: var(--color-background);
   font-size: 1.4rem;
   text-align: center;
 }