minor style decision

src/components/exercisestyle.css

@@ -15,8 +15,8 @@ body{
 .exercise-item{
     margin-top: 30px;
     text-align: start;
-    border: 5px solid orange;
-    background-color: lightgray;
+    border: 5px solid #42b983;
+    background-color: darkgray;
     color: black;
     width: fit-content;
     border-radius: 5px;