diff --git a/build.sh b/build.sh
index 77c3c55..bafd894 100755
--- a/build.sh
+++ b/build.sh
@@ -2,11 +2,19 @@
 
 clear
 
+STEPS=' 4'
+
+echo "[ 1/$STEPS] Cleaning..."
 rm dist/* &> /dev/null
 rm brakeconf &> /dev/null
+
+echo "[ 2/$STEPS] Build GUI..."
 python3 ./build_gui.py gui/index.html dist/index.html &> /dev/null
 xxd -i -n html_document dist/index.html > src/html.h
 # sed -i 's/unsigned char/const unsigned char/g' src/html.h
+
+echo "[ 3/$STEPS] Compile..."
 gcc -I./webui -o brakeconf src/device.c src/main.c src/ui.c webui/libwebui-2-static.a -lserialport -ljansson
 
+echo "[ 4/$STEPS] Running..."
 ./brakeconf icanthink
diff --git a/gui/app.js b/gui/app.js
index 72ea3b7..2d9da03 100644
--- a/gui/app.js
+++ b/gui/app.js
@@ -1,6 +1,6 @@
 'use strict';
 
-const ENABLE_AUTO_CHECK_THEME = false;
+const ENABLE_AUTO_CHECK_THEME = true;
 
 // Перечень кнопок переключения окон
 const enumWindowButtons = [
diff --git a/gui/index.html b/gui/index.html
index f74fd09..bf0f798 100644
--- a/gui/index.html
+++ b/gui/index.html
@@ -186,7 +186,9 @@
 			<main class="d-flex flex-fill" style="width: 600px">
 				<!-- Device -->
 				<div id="appWindowDevice" class="flex-fill card shadow p-3">
-					<label class="mb-1">Порт для подключения</label>
+					<p class="text-center">
+					Порт для подключения
+				</p>
 					<div class="input-group mb-3">
 						<select id="port_selector" class="form-select">
 							<option value="null" selected>Выберите порт...</option>
@@ -205,7 +207,9 @@
 
 				<!-- Testing -->
 				<div id="appWindowTesting" class="d-none flex-fill card shadow p-3">
-					<label class="pb-2">Активация режимов</label>
+					<p class="text-center">
+					Активация режимов
+				</p>
 					<div class="d-flex btn-group mb-3">
 						<input
 							type="checkbox"
@@ -226,7 +230,9 @@
 					</div>
 
 					<!-- zone switchers -->
-					<label class="pb-2">Переключатели зон</label>
+					<p class="text-center">
+					Переключатели зон
+				</p>
 					<div class="d-flex btn-group mb-3">
 						<input
 							type="radio"
@@ -259,7 +265,9 @@
 					</div>
 
 					<!-- command sender -->
-					<label class="pb-2">Отправить команду</label>
+					<p class="text-center">
+						Отправить команду
+					</p>
 					<div class="input-group mb-3">
 						<span class="input-group-text">Команда</span>
 						<input id="input_command" type="text" class="form-control" />
@@ -269,40 +277,47 @@
 
 				<!-- Settings -->
 				<div id="appWindowSettings" class="d-none flex-fill card shadow p-3">
-					settings
+					<div class="alert alert-danger text-center">
+						В разработке
+					</div>
 				</div>
 
 				<!-- FirmwareUpdate -->
 				<div id="appWindowFirmwareUpdate" class="d-none flex-fill card shadow p-3">
-					FW update
+					<div class="alert alert-danger text-center">
+						В разработке
+					</div>
 				</div>
 
 				<!-- Log -->
 				<div id="appWindowLog" class="d-none flex-fill card shadow p-3">
-					<div>
-						<textarea
-							id="connection_log_console"
-							class="form-control h-100 font-monospace bg-dark text-bg-dark"
-							rows="15"
-							placeholder="Лог подключения"
-							autocomplete="off"
-							readonly></textarea>
-						<div class="form-check form-switch mt-1">
-							<input
-								class="form-check-input"
-								type="checkbox"
-								role="switch"
-								id="sw_connection_log_autoscroll"
-								checked />
-							<label class="form-check-label" for="sw_connection_log_autoscroll">
-								Автоматическая прокрутка
-							</label>
-						</div>
+					<p class="text-center">
+						Лог работы программы
+					</p>
+					<textarea
+						id="connection_log_console"
+						class="form-control h-100 font-monospace bg-dark text-bg-dark"
+						placeholder="Лог подключения"
+						autocomplete="off"
+						readonly></textarea>
+					<div class="form-check form-switch mt-3">
+						<input
+							class="form-check-input"
+							type="checkbox"
+							role="switch"
+							id="sw_connection_log_autoscroll"
+							checked />
+						<label class="form-check-label" for="sw_connection_log_autoscroll">
+							Автоматическая прокрутка
+						</label>
 					</div>
 				</div>
 
 				<!-- About -->
 				<div id="appWindowAbout" class="d-none flex-fill card shadow p-3">
+					<p class="text-center">
+						О программе
+					</p>
 					<div class="alert alert-info text-center">
 						Программа для настройки
 						<span class="fw-bold">модуля торможения</span>.
diff --git a/src/main.c b/src/main.c
index 9607026..5aa9393 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,7 +11,8 @@ struct sp_port *serial_port;
 int main(int argc, char const *argv[]) {
     int app_window = webui_new_window();
 
-    html_document[html_document_len] = '\0';
+    // html_document[html_document_len] = '\0';
+    html_document[html_document_len + 1] = '\0';
 
     if (argc > 1 && strcmp(argv[1], "icanthink") == 0) {
     }