登录样式优化

src/index.less

@@ -82,6 +82,18 @@ code {
   color: #ff4d4f;
 }
 
+.c-yellow {
+  color: #e1a500;
+}
+
+.c-green {
+  color: #04c877;
+}
+
+.c-gray {
+  color: #999999;
+}
+
 .c-red {
   color: #ff4d4f;
 }
@@ -91,6 +103,11 @@ code {
   height: 100px;
 }
 
+.form-course-thumb{
+  width: 200px;
+  height: 150px;
+}
+
 .playedu-main-body {
   width: 100%;
   height: auto;