Added track image row component

app/styles/_variables.scss

@@ -9,6 +9,7 @@ $color-button-hover: rgba(255, 255, 255, 0.16);
 $color-attention: #fc8181;
 $color-slider-monochrome: white;
 
+$border-radius-sm: 0.15rem;
 $border-radius-standard: 0.3rem;
 $border-radius-lg: 0.6rem;