css: fix inv creation card width on mobile

for #339. Cards were fixed at half-width, even when wrapping. Instead of
    fixing with breakpoints, remove the width specification and set each to
    "flex-grow: 1".

html/admin.html

@@ -554,7 +554,7 @@
                 <div class="card @low dark:~d_neutral">
                     <span class="heading">{{ .strings.create }}</span>
                     <div class="flex flex-col md:flex-row gap-3 mt-2" id="create-inv">
-                        <div class="card ~neutral @low flex flex-col gap-2 w-1/2">
+                        <div class="card ~neutral @low flex flex-col gap-2 grow">
                             <div class="flex flex-row gap-2">
                                 <label class="w-1/2">
                                     <input type="radio" name="duration" class="unfocused" id="radio-inv-duration" checked>
@@ -662,7 +662,7 @@
                                 <input type="text" id="create-user-label" class="input ~neutral @low">
                             </div>
                         </div>
-                        <div class="card ~neutral @low flex flex-col justify-between gap-2 w-1/2">
+                        <div class="card ~neutral @low flex flex-col justify-between gap-2 grow">
                             <div class="flex flex-col gap-2">
                                 <div class="flex flex-col gap-4">
                                     <label class="label supra" for="create-uses">{{ .strings.inviteNumberOfUses }}</label>

package-lock.json

@@ -15,7 +15,6 @@
         "any-date-parser": "^1.5.4",
         "browserslist": "^4.21.7",
         "cheerio": "^1.0.0-rc.12",
-        "esbuild": "^0.18.20",
         "fs-cheerio": "^3.0.0",
         "inline-source": "^8.0.2",
         "jsdom": "^22.1.0",