added client RA bill wise download report

app/static/css/subcontractor.css

@@ -0,0 +1,35 @@
+body {
+    background: #f5f7fa;
+    font-family: Arial;
+    padding: 40px;
+}
+
+form {
+    width: 420px;
+    padding: 20px;
+    background: #fff;
+    border-radius: 8px;
+    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
+}
+
+label {
+    margin-top: 10px;
+    display: block;
+    font-weight: bold;
+}
+
+input,
+textarea {
+    width: 100%;
+    padding: 8px;
+    margin-top: 4px;
+}
+
+button {
+    margin-top: 20px;
+    padding: 10px 20px;
+    background: #0055ff;
+    color: #fff;
+    border: 0;
+    cursor: pointer;
+}