diff -u b/src/Form/PanelsBlockConfigureFormBase.php b/src/Form/PanelsBlockConfigureFormBase.php
--- b/src/Form/PanelsBlockConfigureFormBase.php
+++ b/src/Form/PanelsBlockConfigureFormBase.php
@@ -150,6 +150,12 @@
       '#default_value' => !empty($settings['css_id']) ? $settings['css_id'] : NULL,
     ];
 
+    $form['css_styles'] = [
+      '#title' => $this->t('CSS styles'),
+      '#type' => 'textarea',
+      '#default_value' => !empty($settings['css_styles']) ? $settings['css_styles'] : NULL,
+    ];
+
     $form['actions']['submit'] = [
       '#type' => 'submit',
       '#value' => $this->submitText(),
@@ -192,6 +198,7 @@
     $configuration['region'] = $form_state->getValue('region');
     $configuration['css_classes'] = $form_state->getValue('css_classes');
     $configuration['css_id'] = $form_state->getValue('css_id');
+    $configuration['css_styles'] = $form_state->getValue('css_styles');
     $this->getVariantPlugin()->updateBlock($this->block->getConfiguration()['uuid'], $configuration);
 
     $cached_values = $this->getCachedValues($this->tempstore, $this->tempstore_id, $form_state->get('machine_name'));
diff -u b/src/Plugin/DisplayVariant/PanelsDisplayVariant.php b/src/Plugin/DisplayVariant/PanelsDisplayVariant.php
--- b/src/Plugin/DisplayVariant/PanelsDisplayVariant.php
+++ b/src/Plugin/DisplayVariant/PanelsDisplayVariant.php
@@ -349,6 +349,12 @@
         if (!empty($css_id)) {
           $build[$region_name][$block_uuid]['#attributes']['id'] = Html::getId($css_id);
         }
+
+        // Add CSS styles.
+        $css_styles = !empty($this->configuration['blocks'][$block_uuid]['css_styles']) ? $this->configuration['blocks'][$block_uuid]['css_styles'] : '';
+        if (!empty($css_styles)) {
+          $build[$region_name][$block_uuid]['#attributes']['style'] = $css_styles;
+        }
       }
     }