Fix frame extending past viewport when zoomed in

When a user zooms in (`ctrl/cmd` + `+`), the Vomnibar frame will extend
down past the viewport. The height is set to calc(100% - 70px) on the
actual iframe, and we can't reach it with this CSS. Setting a max-height
that is effectively the same, but measured in viewport units, on the
Vomnibar container keeps it from going past the bottom of the viewport.

src/catppuccin-vimium-frappe.css

@@ -23,6 +23,7 @@
   background: #303446; /* base */
   border: 2px solid #BABBF1; /* lavender */
   animation: show 200ms cubic-bezier(0, 0, 0.2, 1) forwards;
+  max-height: calc(100vh - 70px);
   overflow: hidden;
 }
 

src/catppuccin-vimium-latte.css

@@ -23,6 +23,7 @@
   background: #EFF1F5; /* base */
   border: 2px solid #7287FD; /* lavender */
   animation: show 200ms cubic-bezier(0, 0, 0.2, 1) forwards;
+  max-height: calc(100vh - 70px);
   overflow: hidden;
 }
 

src/catppuccin-vimium-macchiato.css

@@ -23,6 +23,7 @@
   background: #24273A; /* base */
   border: 2px solid #B7BDF8; /* lavender */
   animation: show 200ms cubic-bezier(0, 0, 0.2, 1) forwards;
+  max-height: calc(100vh - 70px);
   overflow: hidden;
 }
 

src/catppuccin-vimium-mocha.css

@@ -23,6 +23,7 @@
   background: #1E1E2E; /* base */
   border: 2px solid #B4BEFE; /* lavender */
   animation: show 200ms cubic-bezier(0, 0, 0.2, 1) forwards;
+  max-height: calc(100vh - 70px);
   overflow: hidden;
 }