Add spoiler

Author: mogeko

assets/css/_custom.scss

@@ -1,4 +1,16 @@
 // ==============================
 // Custom style
 // ==============================
-// You can override the variables in _variables.scss to customize the style
+// You can override the variables in _variables.scss to customize the style
+
+.spoiler { 
+  color: black; 
+  background-color:black;
+}
+.spoiler:hover{
+  color: white;
+}
+
+.post-warp .post-content img {
+  max-width: 100%;
+}