diff --git a/config.yaml b/config.yaml
index 16490da..07c9ea7 100644
--- a/config.yaml
+++ b/config.yaml
@@ -1,4 +1,4 @@
-baseURL: https://digitalstudium.com
+base_url: https://digitalstudium.com
 theme: ds
 
 languages:
@@ -21,3 +21,7 @@ languages:
 schema:
   type: TechArticle
   copyright: http://creativecommons.org/licenses/by/4.0/
+
+includes: ['copy.js']
+
+custom_css: custom.css
diff --git a/content/en/bash-lifehacks/bash-arrays-and-hashmaps.md b/content/en/bash-lifehacks/bash-arrays-and-hashmaps.md
index 980c058..0299a34 100644
--- a/content/en/bash-lifehacks/bash-arrays-and-hashmaps.md
+++ b/content/en/bash-lifehacks/bash-arrays-and-hashmaps.md
@@ -10,19 +10,19 @@ Sometimes there is a need to use in BASH such structures as lists (also known as
 
 Array creation in bash can be done this way:
 
-```shell
+```bash
 sample_array=(foo bar bazz)
 ```
 
 In order to add single or multiple new elements to the end of array, you should use this syntax:
 
-```shell
+```bash
 sample_array+=(six seven)
 ```
 
 In order to get elements of the list in a cycle, you should use this syntax:
 
-```shell
+```bash
 for i in ${sample_array[@]}
 do
   echo $i
@@ -31,7 +31,7 @@ done
 
 Here is an example how to get element by its index:
 
-```shell
+```bash
 echo ${sample_array[0]}
 echo ${sample_array[3]}
 
@@ -40,7 +40,7 @@ echo ${sample_array[3]}
 
 Array slicing:
 
-```shell
+```bash
 sliced_array=${sample_array[@]:1} # will get all elements of a sample_array, starting with 1st
 another_sliced_array=${sample_array[@]:1:5} # will get sample_array elements since 1st to 5th
 ```
@@ -48,19 +48,19 @@ another_sliced_array=${sample_array[@]:1:5} # will get sample_array elements sin
 ## 2. Hashmaps
 To create hashmap in bash use this syntax:
 
-```shell
+```bash
 declare -A sample_hashmap=([one]=one [two]=two [three]=three [four]=four [five]=five)
 ```
 
 This will add new key "foo" with value "bar":
 
-```shell
+```bash
 sample_hashmap[foo]=bar
 ```
 
 Cycle: 
 
-```shell
+```bash
 for key in ${sample_hashmap[@]}
 do
   echo ${sample_hashmap[$key]}
diff --git a/content/en/linux-lifehacks/how-to-create-lvm-logical-volume.md b/content/en/linux-lifehacks/how-to-create-lvm-logical-volume.md
index 3776117..4019393 100644
--- a/content/en/linux-lifehacks/how-to-create-lvm-logical-volume.md
+++ b/content/en/linux-lifehacks/how-to-create-lvm-logical-volume.md
@@ -14,7 +14,7 @@ sudo fdisk -l
 ```
 to make sure the drive is recognized by the operating system, and to identify the drive name. Output
 of command will be something like this:
-```plaintext
+```
 Disk /dev/vdb: 10 GiB, 10737418240 bytes, 20971520 sectors
 Units: sectors of 1 * 512 = 512 bytes
 Sector size (logical/physical): 512 bytes/512 bytes
@@ -26,7 +26,7 @@ physical volume using the command:
 sudo pvcreate /dev/vdb
 ```
 You will see output like this:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo pvcreate /dev/vdb
 Physical volume "/dev/vdb" successfully created.
 kostya@ubuntu-21-04:~$
@@ -41,7 +41,7 @@ In our case, the command will look like this:
 sudo vgcreate vg-example /dev/vdb
 ```
 The command output will look like this:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo vgcreate vg-example/dev/vdb
 Volume group "vg-example" successfully created
 kostya@ubuntu-21-04:~$
@@ -56,7 +56,7 @@ In our case, it will be:
 sudo lvcreate --size 5G --name lv-example vg-example
 ```
 You will see output like this:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo lvcreate --size 5G --name lv-example vg-example
 Logical volume "lv-example" created.
 kostya@ubuntu-21-04:~$
@@ -71,7 +71,7 @@ To create an xfs filesystem, type the command:
 sudo mkfs.xfs /dev/vg-example/lv-example
 ```
 The command output will look like this:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo mkfs.xfs/dev/vg-example/lv-example
 meta-data =/dev/vg-example/lv-example isize = 512 agcount = 4, agsize = 327680 blks
             = sectsz = 512 attr = 2, projid32bit = 1
@@ -102,7 +102,7 @@ You can verify that the logical volume has been mounted successfully using the c
 df -h /opt
 ```
 The output should be like this:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ df -h /opt/
 Filesystem                         Size  Used Avail Use% Mounted on
 /dev/mapper/vg--random-lv--random  5.0G   68M  5.0G   2% /opt
diff --git a/content/en/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md b/content/en/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md
index af3668a..8ac60d2 100644
--- a/content/en/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md
+++ b/content/en/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md
@@ -17,7 +17,7 @@ sudo fdisk -l
 
 This is to make sure the drive is recognized by the operating system, and to identify the drive name. Output of the command will be something like this:
 
-```plaintext
+```
 Disk /dev/vdc: 5 GiB, 5368709120 bytes, 10485760 sectors
 Units: sectors of 1 * 512 = 512 bytes
 Sector size (logical/physical): 512 bytes/512 bytes
@@ -32,7 +32,7 @@ sudo pvcreate /dev/vdc
 
 You will see output like this:
 
-```plaintext
+```
     kostya@ubuntu-21-04:~$ sudo pvcreate /dev/vdc
     Physical volume "/dev/vdc" successfully created.
     kostya@ubuntu-21-04:~$
@@ -42,7 +42,7 @@ You will see output like this:
 
 To get a list of available volume groups run this command:
 
-```shell
+```bash
 vgdisplay
 ```
 
@@ -60,7 +60,7 @@ sudo vgextend vg-example /dev/vdc
 
 You will see output like this:
 
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo vgextend vg-example /dev/vdc
 Physical volume "/dev/vdc" successfully created.
 Volume group "vg-example" successfully extended
@@ -83,7 +83,7 @@ sudo lvextend --size +2G vg-example/lv-example
 
 You will see output like this:
 
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo lvextend --size +2G vg-example/lv-example
 Size of logical volume vg-example/lv-example changed from 5.00 GiB (1280 extents) to 7.00 GiB (1792 extents).
 Logical volume vg-example/lv-example successfully resized.
diff --git a/content/en/linux-lifehacks/linux-how-to-limit-var-log-size.md b/content/en/linux-lifehacks/linux-how-to-limit-var-log-size.md
index 3b913c4..4dd3d3d 100644
--- a/content/en/linux-lifehacks/linux-how-to-limit-var-log-size.md
+++ b/content/en/linux-lifehacks/linux-how-to-limit-var-log-size.md
@@ -21,7 +21,7 @@ Logrotate rotates almost all log files in the `/var/log` folder every day. For e
 ```bash
 ls /var/log/kern*
 ```
-```plaintext
+```
 /var/log/kern.log    /var/log/kern.log.2.gz  /var/log/kern.log.4.gz
 /var/log/kern.log.1  /var/log/kern.log.3.gz
 ```
@@ -30,7 +30,7 @@ To limit the number of log files, edit the file `/etc/logrotate.d/rsyslog`. Look
 ```bash
 cat /etc/logrotate.d/rsyslog
 ```
-```plaintext
+```
 /var/log/syslog
 /var/log/mail.info
 /var/log/mail.warn
diff --git a/content/en/linux-lifehacks/linux-monitoring-with-telegram-alerts.md b/content/en/linux-lifehacks/linux-monitoring-with-telegram-alerts.md
index f04d432..de2337a 100644
--- a/content/en/linux-lifehacks/linux-monitoring-with-telegram-alerts.md
+++ b/content/en/linux-lifehacks/linux-monitoring-with-telegram-alerts.md
@@ -57,7 +57,7 @@ docker ps
 ```
 
 The command output should contain 5 containers: prometheus, grafana, alertmanager, node-exporter, grafana.
-```plaintext
+```
 CONTAINER ID   IMAGE                              COMMAND                  CREATED      STATUS                PORTS                       NAMES
 46fba26e7234   gcr.io/cadvisor/cadvisor:v0.47.0   "/usr/bin/cadvisor -…"   5 days ago   Up 5 days (healthy)   8080/tcp                    monitoring_cadvisor.1.q02qcn798dh0rydo1dzslylse
 f212e3c66786   prom/alertmanager:v0.25.0          "/bin/alertmanager -…"   6 days ago   Up 6 days             9093/tcp                    monitoring_alertmanager.1.oysziztrqnur7xr0hr82avunz
diff --git a/content/en/python-lifehacks/how-to-easily-write-linux-cli-tool.md b/content/en/python-lifehacks/how-to-easily-write-linux-cli-tool.md
index 10a0fd0..caaac0a 100644
--- a/content/en/python-lifehacks/how-to-easily-write-linux-cli-tool.md
+++ b/content/en/python-lifehacks/how-to-easily-write-linux-cli-tool.md
@@ -47,7 +47,7 @@ my-cli-tool kernel
 ```
 
 You will see output like this:
-```plaintext
+```
 ❯ my-cli-tool kernel
 Kernel version: 6.2.2-060202-generic
 ```
@@ -58,7 +58,7 @@ This will automatically generate a help page, which can be called using the `--h
 my-cli-tool --help
 ```
 You will get this output:
-```plaintext
+```
 NAME
      my-cli-tool - A CLI tool for getting system information about Linux server
 
@@ -104,7 +104,7 @@ Now we can type the following command:
 my-cli-tool kernel --format short
 ```
 Output:
-```plaintext
+```
 6.2.2
 ```
 This will also automatically update the help page, adding the `--format` flag and its possible values:
@@ -112,7 +112,7 @@ This will also automatically update the help page, adding the `--format` flag an
 my-cli-tool kernel --help
 ```
 Output:
-```plaintext
+```
 NAME
     my-cli-tool kernel - A method for getting kernel version
 
diff --git a/content/en/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md b/content/en/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md
index f097422..4103138 100644
--- a/content/en/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md
+++ b/content/en/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md
@@ -47,7 +47,7 @@ Now you can run main.py file with the command:
 python3 main.py
 ```
 You will see this output:
-```plaintext
+```
 200
 {
 	"args": {
diff --git a/content/en/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md b/content/en/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md
index 0634b84..9cca3ba 100644
--- a/content/en/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md
+++ b/content/en/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md
@@ -14,7 +14,7 @@ sudo apt update && sudo apt -y upgrade
 The `sudo apt update` command will update the repository cache, and the `sudo apt -y upgrade` command will install new versions of all installed programs, including the linux kernel. The advantage of this method is that the latest version of the linux kernel, <i>officially supported</i> by Ubuntu OS, will be installed. The disadvantage of this method is that the <i>officially supported</i> kernel is usually not the newest. Sometimes it happens that it is necessary to install the latest version of the linux kernel. Real world example: your new laptop may have a CPU which is only supported in linux kernel version 5.12, while the officially supported version is older. And here the second method comes to the rescue.
 ### Second method
 The first step is to go to https://kernel.ubuntu.com/~kernel-ppa/mainline/. On this site, you need to select the folder with the latest version of the linux kernel (at the very bottom of the page). Note that it is recommended to select the version without the "rc" suffix. The "rc" suffix means "release candidate", which in turn means that the given kernel version is not stable. On the page that opens, select the folder with the architecture of your processor. The architecture can be found using the `uname -p` command. If the output of this command is "x86_64", then select the amd64 folder. On the opened page there will be links to .deb files. We need to download 4 of them:
-```plaintext
+```
 linux-headers-{version}-generic_{version}.{date}_amd64.deb
 linux-headers-{version}_{version}.{date}_all.deb
 linux-image-unsigned-{version}-generic_{version}.{date}_amd64.deb
diff --git a/content/ru/bash-lifehacks/bash-arrays-and-hashmaps.md b/content/ru/bash-lifehacks/bash-arrays-and-hashmaps.md
index 80f7590..0edb91c 100644
--- a/content/ru/bash-lifehacks/bash-arrays-and-hashmaps.md
+++ b/content/ru/bash-lifehacks/bash-arrays-and-hashmaps.md
@@ -10,19 +10,19 @@ date: 2023-05-07T13:35:26.956Z
 
 создание массива в bash делается просто:
 
-```shell
+```bash
 sample_array=(foo bar bazz)
 ```
 
 Чтобы добавить один или несколько новых элементов в конец массива, нужно использовать такой синтаксис:
 
-```shell
+```bash
 sample_array+=(six seven)
 ```
 
 Чтобы пройти по массиву циклом, нужно использовать такой синтаксис:
 
-```shell
+```bash
 for i in ${sample_array[@]}
 do
   echo $i
@@ -31,7 +31,7 @@ done
 
 Чтобы получить элемент по индексу, используется такая конструкция:
 
-```shell
+```bash
 echo ${sample_array[0]}
 echo ${sample_array[3]}
 
@@ -40,7 +40,7 @@ echo ${sample_array[3]}
 
 Чтобы обрезать массив, используется такая конструкция:
 
-```shell
+```bash
 sliced_array=${sample_array[@]:1} # выведет все элементы sample_array, начиная с 1-го
 another_sliced_array=${sample_array[@]:1:5} # выведет элементы sample_array с 1-го по 5-й
 ```
@@ -49,19 +49,19 @@ another_sliced_array=${sample_array[@]:1:5} # выведет элементы sa
 
 создание ассоциативного массива в bash делается так:
 
-```shell
+```bash
 declare -A sample_hashmap=([one]=one [two]=two [three]=three [four]=four [five]=five)
 ```
 
 Добавление новых элементов:
 
-```shell
+```bash
 sample_hashmap[foo]=bar
 ```
 
 Обход в цикле: 
 
-```shell
+```bash
 for key in ${sample_hashmap[@]}
 do
   echo ${sample_hashmap[$key]}
diff --git a/content/ru/linux-lifehacks/how-to-create-lvm-logical-volume.md b/content/ru/linux-lifehacks/how-to-create-lvm-logical-volume.md
index f9f09f5..e186116 100644
--- a/content/ru/linux-lifehacks/how-to-create-lvm-logical-volume.md
+++ b/content/ru/linux-lifehacks/how-to-create-lvm-logical-volume.md
@@ -14,7 +14,7 @@ sudo fdisk -l
 ```
 чтобы убедиться, что диск распознан операционной системой, а также чтобы идентифицировать имя диска. Вывод
 команды будет примерно такой:
-```plaintext
+```
 Disk /dev/vdb: 10 GiB, 10737418240 bytes, 20971520 sectors
 Units: sectors of 1 * 512 = 512 bytes
 Sector size (logical/physical): 512 bytes / 512 bytes
@@ -26,7 +26,7 @@ I/O size (minimum/optimal): 512 bytes / 512 bytes
 sudo pvcreate /dev/vdb
 ```
 Вы увидите такой вывод:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo pvcreate /dev/vdb
 Physical volume "/dev/vdb" successfully created.
 kostya@ubuntu-21-04:~$  
@@ -41,7 +41,7 @@ sudo vgcreate {vgname} {pvname}
 sudo vgcreate vg-example /dev/vdb
 ```
 Вывод команды будет такой:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo vgcreate vg-example /dev/vdb
 Volume group "vg-example" successfully created
 kostya@ubuntu-21-04:~$  
@@ -56,7 +56,7 @@ sudo lvcreate --size {size} --name {lv-name} {vg-name}
 sudo lvcreate --size 5G --name lv-example vg-example
 ```
 Вы увидите такой вывод:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo lvcreate --size 5G --name lv-example vg-example
 Logical volume "lv-example" created.
 kostya@ubuntu-21-04:~$   
@@ -71,7 +71,7 @@ sudo lvcreate --extents 100%FREE --name lv-example vg-example
 sudo mkfs.xfs /dev/vg-example/lv-example
 ```
 Вывод команды будет такой:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo mkfs.xfs /dev/vg-example/lv-example
 meta-data=/dev/vg-example/lv-example isize=512    agcount=4, agsize=327680 blks
             =                       sectsz=512   attr=2, projid32bit=1
@@ -102,7 +102,7 @@ sudo mount -a
 df -h /opt
 ```
 Вывод должен быть такой:
-```plaintext
+```
 kostya@ubuntu-21-04:~$ df -h /opt/
 Filesystem                         Size  Used Avail Use% Mounted on
 /dev/mapper/vg--random-lv--random  5.0G   68M  5.0G   2% /opt
diff --git a/content/ru/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md b/content/ru/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md
index e95dc37..96d17f9 100644
--- a/content/ru/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md
+++ b/content/ru/linux-lifehacks/how-to-extend-lvm-volume-on-linux.md
@@ -17,7 +17,7 @@ sudo fdisk -l
 
 Это нужно, чтобы убедиться, что диск распознан операционной системой, а также чтобы идентифицировать имя диска. Вывод команды будет примерно такой:
 
-```plaintext
+```
 Disk /dev/vdc: 5 GiB, 5368709120 bytes, 10485760 sectors
 Units: sectors of 1 * 512 = 512 bytes
 Sector size (logical/physical): 512 bytes / 512 bytes
@@ -32,7 +32,7 @@ sudo pvcreate /dev/vdc
 
 Вы увидите такой вывод:
 
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo pvcreate /dev/vdc
 Physical volume "/dev/vdc" successfully created.
 kostya@ubuntu-21-04:~$    
@@ -42,7 +42,7 @@ kostya@ubuntu-21-04:~$
 
 Чтобы увидеть список доступных групп томов, воспользуйтесь командой:
 
-```shell
+```bash
 vgdisplay
 ```
 
@@ -60,7 +60,7 @@ sudo vgextend vg-example /dev/vdc
 
 Вы увидите такой вывод:
 
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo vgextend vg-example /dev/vdc
 Physical volume "/dev/vdc" successfully created.
 Volume group "vg-example" successfully extended
@@ -83,7 +83,7 @@ sudo lvextend --size +2G vg-example/lv-example
 
 Вы увидите такой вывод:
 
-```plaintext
+```
 kostya@ubuntu-21-04:~$ sudo lvextend --size +2G vg-example/lv-example
 Size of logical volume vg-example/lv-example changed from 5.00 GiB (1280 extents) to 7.00 GiB (1792 extents).
 Logical volume vg-example/lv-example successfully resized.
diff --git a/content/ru/linux-lifehacks/linux-how-to-limit-var-log-size.md b/content/ru/linux-lifehacks/linux-how-to-limit-var-log-size.md
index 3f090af..85fb048 100644
--- a/content/ru/linux-lifehacks/linux-how-to-limit-var-log-size.md
+++ b/content/ru/linux-lifehacks/linux-how-to-limit-var-log-size.md
@@ -18,7 +18,7 @@ Logrotate каждый день совершает ротацию почти в
 ```bash
 ls /var/log/kern*
 ```
-```plaintext
+```
 /var/log/kern.log    /var/log/kern.log.2.gz  /var/log/kern.log.4.gz
 /var/log/kern.log.1  /var/log/kern.log.3.gz
 ```
@@ -26,7 +26,7 @@ ls /var/log/kern*
 ```bash
 cat /etc/logrotate.d/rsyslog
 ```
-```plaintext
+```
 /var/log/syslog
 /var/log/mail.info
 /var/log/mail.warn
diff --git a/content/ru/linux-lifehacks/linux-monitoring-with-telegram-alerts.md b/content/ru/linux-lifehacks/linux-monitoring-with-telegram-alerts.md
index a5eea64..7c12403 100644
--- a/content/ru/linux-lifehacks/linux-monitoring-with-telegram-alerts.md
+++ b/content/ru/linux-lifehacks/linux-monitoring-with-telegram-alerts.md
@@ -57,7 +57,7 @@ docker ps
 ```
 
 Вывод команды должен содержать 5 контейнеров: prometheus, grafana, alertmanager, node-exporter, grafana.
-```plaintext
+```
 CONTAINER ID   IMAGE                              COMMAND                  CREATED      STATUS                PORTS                       NAMES
 46fba26e7234   gcr.io/cadvisor/cadvisor:v0.47.0   "/usr/bin/cadvisor -…"   5 days ago   Up 5 days (healthy)   8080/tcp                    monitoring_cadvisor.1.q02qcn798dh0rydo1dzslylse
 f212e3c66786   prom/alertmanager:v0.25.0          "/bin/alertmanager -…"   6 days ago   Up 6 days             9093/tcp                    monitoring_alertmanager.1.oysziztrqnur7xr0hr82avunz
diff --git a/content/ru/python-lifehacks/how-to-easily-write-linux-cli-tool.md b/content/ru/python-lifehacks/how-to-easily-write-linux-cli-tool.md
index 6e01db9..34a0bbb 100644
--- a/content/ru/python-lifehacks/how-to-easily-write-linux-cli-tool.md
+++ b/content/ru/python-lifehacks/how-to-easily-write-linux-cli-tool.md
@@ -46,7 +46,7 @@ my-cli-tool kernel
 ```
 
 Вы увидите такой вывод:
-```plaintext
+```
 ❯ my-cli-tool kernel
 Kernel version: 6.2.2-060202-generic
 ```
@@ -57,7 +57,7 @@ Kernel version: 6.2.2-060202-generic
 my-cli-tool --help
 ```
 Вы получите такой вывод:
-```plaintext
+```
 NAME
     my-cli-tool - A CLI tool for getting system information about Linux server
 
@@ -103,7 +103,7 @@ if __name__ == "__main__":
 my-cli-tool kernel --format short
 ```
 На что должен последовать такой вывод:
-```plaintext
+```
 6.2.2
 ```
 При этом автоматически будет скорректирована help страница, туда будет добавлен флаг `--format` и его возможные значения:
@@ -111,7 +111,7 @@ my-cli-tool kernel --format short
 my-cli-tool kernel --help
 ```
 Вывод:
-```plaintext
+```
 NAME
     my-cli-tool kernel - A method for getting kernel version
 
diff --git a/content/ru/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md b/content/ru/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md
index a428ead..d3e49f1 100644
--- a/content/ru/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md
+++ b/content/ru/python-lifehacks/how-to-load-multiple-web-pages-in-parallel-using-python.md
@@ -46,7 +46,7 @@ loop.run_until_complete(fetch_urls(urls))
 python3 main.py
 ```
 Вы увидите примерно такой вывод:
-```plaintext
+```
 200
 {
     "args": {
diff --git a/content/ru/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md b/content/ru/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md
index f8065bf..8c1a8bf 100644
--- a/content/ru/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md
+++ b/content/ru/ubuntu-lifehacks/ubuntu-how-to-upgrade-kernel.md
@@ -14,7 +14,7 @@ sudo apt update && sudo apt -y upgrade
 Команда `sudo apt update` обновит кэш репозиториев, а команда `sudo apt -y upgrade` установит новые версии всех установленных программ, включая ядро linux. Плюс данного способа в том, что будет установлена последняя версия linux ядра, <i>официально поддерживаемого</i> ОС Ubuntu. Минус этого способа в том, что <i>официально поддерживаемое</i> ядро обычно не самое новое. Иногда бывает так, что необходимо установить именно самую новую версию ядра linux. Реальный пример: на вашем новом ноутбуке может быть установлен процессор, поддержка которого обеспечивается только в версии ядра linux 5.12, тогда как официально поддерживаемая версия более старая. И тут на помощь приходит второй способ.
 ### Второй способ
 Первым делом нужно зайти на сайт https://kernel.ubuntu.com/~kernel-ppa/mainline/. На этом сайте нужно выбрать папку с последней версией ядра linux (в самом низу страницы). Обратите внимание, что рекомендуется выбирать версию без суффикса "rc". Суффикс "rc" означает "release candidate", что в свою очередь значит, что данная версия ядра не является стабильной. На открывшейся странице выбираем папку с архитектурой вашего процессора. Архитектуру можно узнать с помощью команды `uname -p`. Если вывод этой команды "x86_64", то выбираем папку amd64. На открывшейся странице будут ссылки на .deb файлы. Нам нужно скачать 4 из них:
-```plaintext
+```
 linux-headers-{version}-generic_{version}.{date}_amd64.deb
 linux-headers-{version}_{version}.{date}_all.deb
 linux-image-unsigned-{version}-generic_{version}.{date}_amd64.deb
diff --git a/static/css/custom.css b/static/css/custom.css
new file mode 100644
index 0000000..8c8a671
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@@ -0,0 +1,84 @@
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diff --git a/themes/ds b/themes/ds
index 5be1e9a..9bba1d2 160000
--- a/themes/ds
+++ b/themes/ds
@@ -1 +1 @@
-Subproject commit 5be1e9acaad8fd84f01e5f7a969033d5c449430d
+Subproject commit 9bba1d2c706d03120930c961c1b4a76535877d54