Allow setting spoiler style via shortcode, move glass shadow to a CSS variable

sass/_media.scss

@@ -72,6 +72,33 @@ video {
 		border-radius: 0;
 		background-color: transparent;
 	}
+
+	&.spoiler,
+	&[src*="#spoiler"] {
+		opacity: var(--dim-opacity);
+		clip-path: inset(0% 0% 0% 0% round var(--rounded-corner));
+		filter: blur(1rem);
+
+		&:hover,
+		&:active {
+			opacity: 1;
+			clip-path: inset(-1rem -1rem -1rem -1rem round 0);
+			filter: none;
+		}
+
+		&.solid,
+		&[src*="#solid"] {
+			clip-path: none;
+			filter: brightness(0%) contrast(50%);
+			box-shadow: none;
+
+			&:hover,
+			&:active {
+				filter: none;
+			}
+		}
+	}
+
 }
 
 img {
@@ -117,3 +144,13 @@ img {
 a img:not(.no-hover, .full-bleed, [src*="#no-hover"], [src*="#full-bleed"]) {
 	cursor: pointer;
 }
+
+video:fullscreen {
+	box-shadow: none;
+	border-radius: 0;
+}
+
+video:-webkit-full-screen {
+	box-shadow: none;
+	border-radius: 0;
+}