4 files changed, 81 insertions, 8 deletions
diff --git a/packages/instant/src/style/fonts.ts b/packages/instant/src/style/fonts.ts
index 975a30a61..92450502d 100644
--- a/packages/instant/src/style/fonts.ts
+++ b/packages/instant/src/style/fonts.ts
@@ -1,10 +1,10 @@
-import { injectGlobal } from './theme';
-
 export const fonts = {
     include: () => {
         // Inject the inter-ui font into the page
-        return injectGlobal`
-            @import url('https://rsms.me/inter/inter-ui.css');
-        `;
+        const appendTo = document.head || document.getElementsByTagName('head')[0] || document.body;
+        const style = document.createElement('style');
+        style.type = 'text/css';
+        style.appendChild(document.createTextNode(`@import url('https://rsms.me/inter/inter-ui.css')`));
+        appendTo.appendChild(style);
     },
 };
diff --git a/packages/instant/src/style/media.ts b/packages/instant/src/style/media.ts
new file mode 100644
index 000000000..bbf376694
--- /dev/null
+++ b/packages/instant/src/style/media.ts
@@ -0,0 +1,51 @@
+import { InterpolationValue } from 'styled-components';
+
+import { css } from './theme';
+
+export enum ScreenWidths {
+    Sm = 40,
+    Md = 52,
+    Lg = 64,
+}
+
+export const generateMediaWrapper = (screenWidth: ScreenWidths) => (...args: any[]) => css`
+    @media (max-width: ${screenWidth}em) {
+        ${css.apply(css, args)};
+    }
+`;
+
+export const media = {
+    small: generateMediaWrapper(ScreenWidths.Sm),
+    medium: generateMediaWrapper(ScreenWidths.Md),
+    large: generateMediaWrapper(ScreenWidths.Lg),
+};
+
+export interface ScreenSpecification<T> {
+    default: T;
+    sm?: T;
+    md?: T;
+    lg?: T;
+}
+export type OptionallyScreenSpecific<T> = T | ScreenSpecification<T>;
+export type MediaChoice = OptionallyScreenSpecific<string>;
+/**
+ * Given a css property name and a OptionallyScreenSpecific value,
+ * generates css properties with screen-specific viewport styling
+ */
+export function stylesForMedia<T extends string | number>(
+    cssPropertyName: string,
+    choice: OptionallyScreenSpecific<T>,
+): InterpolationValue[] {
+    if (typeof choice === 'object') {
+        return css`
+        ${cssPropertyName}: ${choice.default};
+        ${choice.lg && media.large`${cssPropertyName}: ${choice.lg}`}
+        ${choice.md && media.medium`${cssPropertyName}: ${choice.md}`}
+        ${choice.sm && media.small`${cssPropertyName}: ${choice.sm}`}
+    `;
+    } else {
+        return css`
+            ${cssPropertyName}: ${choice};
+        `;
+    }
+}
diff --git a/packages/instant/src/style/theme.ts b/packages/instant/src/style/theme.ts
index d26c816c1..1e9f55e00 100644
--- a/packages/instant/src/style/theme.ts
+++ b/packages/instant/src/style/theme.ts
@@ -1,6 +1,6 @@
 import * as styledComponents from 'styled-components';
 
-const { default: styled, css, injectGlobal, keyframes, ThemeProvider } = styledComponents;
+const { default: styled, css, keyframes, withTheme, createGlobalStyle, ThemeProvider } = styledComponents;
 
 export type Theme = { [key in ColorOption]: string };
 
@@ -10,22 +10,35 @@ export enum ColorOption {
     lightGrey = 'lightGrey',
     grey = 'grey',
     feintGrey = 'feintGrey',
+    lightestGrey = 'lightestGrey',
     darkGrey = 'darkGrey',
     white = 'white',
     lightOrange = 'lightOrange',
     darkOrange = 'darkOrange',
+    green = 'green',
+    red = 'red',
 }
 
 export const theme: Theme = {
-    primaryColor: '#512D80',
+    primaryColor: '#333',
     black: 'black',
     lightGrey: '#999999',
     grey: '#666666',
     feintGrey: '#DEDEDE',
+    lightestGrey: '#EEEEEE',
     darkGrey: '#333333',
     white: 'white',
     lightOrange: '#F9F2ED',
     darkOrange: '#F2994C',
+    green: '#3CB34F',
+    red: '#D00000',
 };
 
-export { styled, css, injectGlobal, keyframes, ThemeProvider };
+export const transparentWhite = 'rgba(255,255,255,0.3)';
+export const completelyTransparent = 'rga(0, 0, 0, 0)';
+
+export const generateOverlayBlack = (opacity = 0.6) => {
+    return `rgba(0, 0, 0, ${opacity})`;
+};
+
+export { styled, css, keyframes, withTheme, createGlobalStyle, ThemeProvider };
diff --git a/packages/instant/src/style/z_index.ts b/packages/instant/src/style/z_index.ts
new file mode 100644
index 000000000..ba2d27a17
--- /dev/null
+++ b/packages/instant/src/style/z_index.ts
@@ -0,0 +1,9 @@
+export const zIndex = {
+    errorPopBehind: 10,
+    mainContainer: 20,
+    dropdownItems: 30,
+    panel: 40,
+    containerOverlay: 45,
+    errorPopup: 50,
+    overlayDefault: 100,
+};