offline optimization, new signal chart, ui optimization

web/css/breadcrumbs.css

@@ -22,6 +22,15 @@ h1#tuner-name {
     transition: 0.3s ease color;
 }
 
+#tuner-name i {
+    transition: transform 0.3s ease;
+}
+
+#tuner-name i.rotated {
+    transform: rotate(180deg);
+}
+
+
 h1#tuner-name:hover {
     color: var(--color-main-bright);
 }
@@ -75,9 +84,13 @@ label {
 }
 
 .canvas-container {
-    width: 100%;
-    height: 175px;
+    width: calc(100% - 20px);
+    height: 140px;
     overflow: hidden;
+    border-radius: 15px;
+    margin-left: 10px;
+    margin-right: 10px;
+    position: relative;
 }
 
 #data-ant {