diff --git a/templates/install.tmpl b/templates/install.tmpl
index 8d6918e6a..0625f43cc 100644
--- a/templates/install.tmpl
+++ b/templates/install.tmpl
@@ -163,8 +163,8 @@
 						<span class="help">{{.locale.Tr "install.log_root_path_helper"}}</span>
 					</div>
 					<div class="inline field">
-						<label for="enable_update_checker">{{.locale.Tr "install.enable_update_checker"}}</label>
 						<div class="ui checkbox">
+							<label for="enable_update_checker">{{.locale.Tr "install.enable_update_checker"}}</label>
 							<input name="enable_update_checker" type="checkbox">
 						</div>
 						<span class="help">{{.locale.Tr "install.enable_update_checker_helper"}}</span>
@@ -202,13 +202,13 @@
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox">
-								<label><strong>{{.locale.Tr "install.register_confirm"}}</strong></label>
+								<label>{{.locale.Tr "install.register_confirm"}}</label>
 								<input name="register_confirm" type="checkbox" {{if .register_confirm}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox">
-								<label><strong>{{.locale.Tr "install.mail_notify"}}</strong></label>
+								<label>{{.locale.Tr "install.mail_notify"}}</label>
 								<input name="mail_notify" type="checkbox" {{if .mail_notify}}checked{{end}}>
 							</div>
 						</div>
@@ -221,73 +221,73 @@
 						</summary>
 						<div class="inline field">
 							<div class="ui checkbox" id="offline-mode">
-								<label class="tooltip" data-content="{{.locale.Tr "install.offline_mode_popup"}}"><strong>{{.locale.Tr "install.offline_mode"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.offline_mode_popup"}}">{{.locale.Tr "install.offline_mode"}}</label>
 								<input name="offline_mode" type="checkbox" {{if .offline_mode}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="disable-gravatar">
-								<label class="tooltip" data-content="{{.locale.Tr "install.disable_gravatar_popup"}}"><strong>{{.locale.Tr "install.disable_gravatar"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.disable_gravatar_popup"}}">{{.locale.Tr "install.disable_gravatar"}}</label>
 								<input name="disable_gravatar" type="checkbox" {{if .disable_gravatar}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="federated-avatar-lookup">
-								<label class="tooltip" data-content="{{.locale.Tr "install.federated_avatar_lookup_popup"}}"><strong>{{.locale.Tr "install.federated_avatar_lookup"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.federated_avatar_lookup_popup"}}">{{.locale.Tr "install.federated_avatar_lookup"}}</label>
 								<input name="enable_federated_avatar" type="checkbox" {{if .enable_federated_avatar}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="enable-openid-signin">
-								<label class="tooltip" data-content="{{.locale.Tr "install.openid_signin_popup"}}"><strong>{{.locale.Tr "install.openid_signin"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.openid_signin_popup"}}">{{.locale.Tr "install.openid_signin"}}</label>
 								<input name="enable_open_id_sign_in" type="checkbox" {{if .enable_open_id_sign_in}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="disable-registration">
-								<label class="tooltip" data-content="{{.locale.Tr "install.disable_registration_popup"}}"><strong>{{.locale.Tr "install.disable_registration"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.disable_registration_popup"}}">{{.locale.Tr "install.disable_registration"}}</label>
 								<input name="disable_registration" type="checkbox" {{if .disable_registration}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="allow-only-external-registration">
-								<label class="tooltip" data-content="{{.locale.Tr "install.allow_only_external_registration_popup"}}"><strong>{{.locale.Tr "install.allow_only_external_registration_popup"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.allow_only_external_registration_popup"}}">{{.locale.Tr "install.allow_only_external_registration_popup"}}</label>
 								<input name="allow_only_external_registration" type="checkbox" {{if .allow_only_external_registration}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="enable-openid-signup">
-								<label class="tooltip" data-content="{{.locale.Tr "install.openid_signup_popup"}}"><strong>{{.locale.Tr "install.openid_signup"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.openid_signup_popup"}}">{{.locale.Tr "install.openid_signup"}}</label>
 								<input name="enable_open_id_sign_up" type="checkbox" {{if .enable_open_id_sign_up}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox" id="enable-captcha">
-								<label class="tooltip" data-content="{{.locale.Tr "install.enable_captcha_popup"}}"><strong>{{.locale.Tr "install.enable_captcha"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.enable_captcha_popup"}}">{{.locale.Tr "install.enable_captcha"}}</label>
 								<input name="enable_captcha" type="checkbox" {{if .enable_captcha}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox">
-								<label class="tooltip" data-content="{{.locale.Tr "install.require_sign_in_view_popup"}}"><strong>{{.locale.Tr "install.require_sign_in_view"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.require_sign_in_view_popup"}}">{{.locale.Tr "install.require_sign_in_view"}}</label>
 								<input name="require_sign_in_view" type="checkbox" {{if .require_sign_in_view}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox">
-								<label class="tooltip" data-content="{{.locale.Tr "install.default_keep_email_private_popup"}}"><strong>{{.locale.Tr "install.default_keep_email_private"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.default_keep_email_private_popup"}}">{{.locale.Tr "install.default_keep_email_private"}}</label>
 								<input name="default_keep_email_private" type="checkbox" {{if .default_keep_email_private}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox">
-								<label class="tooltip" data-content="{{.locale.Tr "install.default_allow_create_organization_popup"}}"><strong>{{.locale.Tr "install.default_allow_create_organization"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.default_allow_create_organization_popup"}}">{{.locale.Tr "install.default_allow_create_organization"}}</label>
 								<input name="default_allow_create_organization" type="checkbox" {{if .default_allow_create_organization}}checked{{end}}>
 							</div>
 						</div>
 						<div class="inline field">
 							<div class="ui checkbox">
-								<label class="tooltip" data-content="{{.locale.Tr "install.default_enable_timetracking_popup"}}"><strong>{{.locale.Tr "install.default_enable_timetracking"}}</strong></label>
+								<label class="tooltip" data-content="{{.locale.Tr "install.default_enable_timetracking_popup"}}">{{.locale.Tr "install.default_enable_timetracking"}}</label>
 								<input name="default_enable_timetracking" type="checkbox" {{if .default_enable_timetracking}}checked{{end}}>
 							</div>
 						</div>
diff --git a/web_src/less/_install.less b/web_src/less/_install.less
index 5769ef68b..515d727f8 100644
--- a/web_src/less/_install.less
+++ b/web_src/less/_install.less
@@ -1,36 +1,57 @@
 .page-content.install {
   padding-top: 45px;
 
-  form {
-    @input-padding: 320px !important;
+  form.ui.form {
+    @input-padding: 30%;
 
-    .inline.field label {
+    .inline.field > label {
       text-align: right;
       width: @input-padding;
+      padding-right: 10px;
+      margin-right: 0;
+    }
+
+    .inline.field > .ui.checkbox:first-child {
+      margin-left: @input-padding;
+      padding-left: 5px;
+      label {
+        width: auto;
+      }
+    }
+
+    .title {
+      margin-left: @input-padding;
+      padding-left: 5px;
     }
 
     input {
-      width: 35% !important;
+      width: 60%;
+    }
+
+    details.optional.field {
+      &[open] {
+        border-bottom: 1px solid var(--color-secondary);
+        padding-bottom: 10px;
+
+        summary {
+          margin-bottom: 10px;
+        }
+      }
+
+      * {
+        box-sizing: border-box;
+      }
     }
 
     .field {
       text-align: left;
 
       .help {
-        margin-left: @input-padding+15px;
+        margin-left: @input-padding;
+        padding-left: 5px;
+        width: 60%;
       }
 
-      &.optional {
-        .title {
-          margin-left: 38%;
-        }
-        .checkbox {
-          margin-left: 40% !important;
-          label {
-            width: auto !important;
-          }
-        }
-      }
     }
   }