Restyle login window

src/locutus.ts

@@ -210,8 +210,12 @@ export class App {
                 <input name="account" placeholder="Account name" type="text" required/>
                 <input name="domain" placeholder="Domain" type="text" pattern="([a-zA-Z0-9_-]+\\.)+[a-zA-Z]{2,}" required/>
                 <input name="password" placeholder="Password" type="password" required/>
-                <label><input name="saveAccountName" type="checkbox"/> Save Account Name</label>
-                <label><input name="keepSession" type="checkbox"/> Keep me signed in</label>
+                <fieldset>
+                    <label><input name="saveAccountName" type="checkbox"/> Save Account Name</label>
+                </fieldset>
+                <fieldset>
+                    <label><input name="keepSession" type="checkbox"/> Keep me signed in</label>
+                </fieldset>
                 <button type="submit">Login</button>
             </form>`;