diff --git a/src/style.css b/src/style.css
index 8366af8..460fee9 100644
--- a/src/style.css
+++ b/src/style.css
@@ -3,16 +3,31 @@
   line-height: 1.5;
   font-weight: 400;
 
-  color-scheme: light dark;
-  color: rgba(255, 255, 255, 0.87);
-  background-color: #1d1d1d;
+  color-scheme: normal;
+  color: rgba(0, 0, 0, 0.87);
+  background-color: #ffffff;
 
   font-synthesis: none;
   text-rendering: optimizeLegibility;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
 }
+@media (prefers-color-scheme: dark) {
+  :root {
+    font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
+    line-height: 1.5;
+    font-weight: 400;
 
+    color-scheme: dark;
+    background-color: #1d1d1d;
+    color: rgba(255, 255, 255, 0.87);
+
+    font-synthesis: none;
+    text-rendering: optimizeLegibility;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
+  }
+}
 a {
   font-weight: 500;
   color: #646cff;
@@ -30,7 +45,7 @@ ul{
 h1 {
   font-size: 3.2em;
   line-height: 1.1;
-  color:rgb(255, 255, 255)
+
 }
 
 #app {
@@ -48,6 +63,7 @@ h1 {
   grid-template-columns: 2fr 2fr 1fr;
   grid-template-rows: auto auto auto;
   gap: 20px;
+  justify-content: center ;
 }
 .fieldset-section{
   padding:20px
@@ -109,4 +125,7 @@ h1 {
   gap: 1rem;
   padding-bottom: 2rem;
 
+}
+.carousmex{
+  width: 600px;
 }
\ No newline at end of file
diff --git a/src/views/Dashboard.vue b/src/views/Dashboard.vue
index cdc9667..c8bb965 100644
--- a/src/views/Dashboard.vue
+++ b/src/views/Dashboard.vue
@@ -14,6 +14,7 @@ import { useToast } from 'primevue/usetoast';
 import Divider from 'primevue/divider';
 import ScrollPanel from 'primevue/scrollpanel';
 import Chip from 'primevue/chip';
+import PMessage from 'primevue/message';
 
 const toast = useToast();
 
@@ -24,6 +25,7 @@ const selectedRef = ref()
 const filteredRef = ref();
 const newValue = ref();
 
+const modifyErrors = ref({});
 const chartProductsData = ref();
 const chartWarehousesData = ref();
 const chartOptions = {plugins:{legend:{labels:{usePointStyle:true,}}}};
@@ -111,6 +113,7 @@ const productValueModifier = async () => {
 
     const product = products.value.find(p => p.reference === selectedRef.value.reference);
     if (product) {
+        modifyErrors.value = {};
         const newQuantity = product.quantity + newValue.value
         try{
             await modifyProduct({
@@ -122,10 +125,16 @@ const productValueModifier = async () => {
             chartProductsData.value = setChartProductsData();
             chartWarehousesData.value = setChartWarehousesData();
         } catch (error){
-            console.error(error)
+            if (error.response && error.response.data) {
+                const data = error.response.data;
+                if (data.detail) {
+                    toast.add({ severity: 'error',life: 2500, summary: 'Erreur', detail: data.detail });
+                };
+                modifyErrors.value = { quantity: data.quantity ? data.quantity[0]:"" }
+            };
         }
     } else {
-        console.error("no product found")
+        toast.add({ severity: 'error',life: 2500, summary: 'Erreur', detail: 'Une erreur est survenue.' });
     }
 };
 function makeAlert(productsAlerts){
@@ -162,6 +171,7 @@ function makeAlert(productsAlerts){
                     <InputNumber inputId="number-value" showButtons v-model="newValue" mode="decimal" fluid></InputNumber>
                     <label for="number-value">Ajouter/Soustraire :</label>
                 </IftaLabel>
+                <p-message v-if="modifyErrors.quantity" severity="error">{{ modifyErrors.quantity }}</p-message>
                 <Button
                     label="Modifier"
                     icon="pi pi-file-edit
@@ -176,8 +186,9 @@ function makeAlert(productsAlerts){
                 Aucun produit renseigné
             </h4>
             <Carousel v-else :value="products" 
-            :numVisible="3" 
-            :numScroll="1" 
+            :numVisible="2" 
+            :numScroll="1"
+            class="carousmex"
             >
                 <template #item="slotProps">
                     <div class="carousel-products">
@@ -200,8 +211,9 @@ function makeAlert(productsAlerts){
                 Aucun entrepôt renseigné
             </h4>
             <Carousel v-else :value="warehouses" 
-            :numVisible="3" 
+            :numVisible="2" 
             :numScroll="1" 
+            class="carousmex"
             >
                 <template #item="slotProps" >
                     <div class="carousel-products">