diff --git a/src/Card/index.tsx b/src/Card/index.tsx
index 9dcdabf..bdb7f8f 100644
--- a/src/Card/index.tsx
+++ b/src/Card/index.tsx
@@ -3,7 +3,11 @@ import { IData } from '../types';
 
 import './main.css';
 
-const Card = ({ data }: { data: IData }) => (
+type props = {
+    data: IData;
+};
+
+const Card: React.FC<props> = ({ data }) => (
     <a
         className="card"
         href={'/' + data.image.slice(data.image.indexOf('media'))}
diff --git a/src/Header/animations.ts b/src/Header/animations.ts
new file mode 100644
index 0000000..c89ce3c
--- /dev/null
+++ b/src/Header/animations.ts
@@ -0,0 +1,23 @@
+import { Transition, Variants } from 'framer-motion';
+
+const headerVariants: Variants = {
+    expanded: {
+        height: '100vh'
+    },
+    collapsed: {
+        height: '10vh'
+    }
+};
+
+const headerTransition: Transition = {
+    duration: 0.5,
+    ease: 'linear'
+};
+
+const loadingLogoTransition: Transition = {
+    loop: Infinity,
+    ease: 'linear',
+    duration: 3
+};
+
+export { headerVariants, headerTransition, loadingLogoTransition };
diff --git a/src/Header/index.tsx b/src/Header/index.tsx
index bf890b3..a766749 100644
--- a/src/Header/index.tsx
+++ b/src/Header/index.tsx
@@ -1,95 +1,43 @@
-import React, { Dispatch, SetStateAction, useEffect } from 'react';
-import { motion, Transition } from 'framer-motion';
-import { useHistory } from 'react-router-dom';
+import React, { Dispatch, SetStateAction } from 'react';
+import { motion } from 'framer-motion';
+import { useLocation } from 'react-router-dom';
 
 import { IFilterQuery, ILoadingState } from '../types';
 import './main.css';
 import Logotype from '../Logotype';
+import { genName } from './utils';
+import {
+    headerTransition,
+    headerVariants,
+    loadingLogoTransition
+} from './animations';
 
-const genName = (
-    searchQuery: IFilterQuery,
-    path: string,
-    error: string
-): string => {
-    if (error) {
-        return error.toString();
-    }
-    if (path === '/list' && searchQuery) {
-        let result = '';
-
-        if (searchQuery.class_num) {
-            result = result + searchQuery.class_num + ' класс';
-        }
-
-        if (searchQuery.predmet_type) {
-            result = result + ' ' + searchQuery.predmet_type;
-        }
-
-        if (searchQuery.teacher) {
-            result = result + ' ' + searchQuery.teacher;
-        }
-
-        if (searchQuery.search) {
-            result = result + ' поиск по "' + searchQuery.search + '"';
-        }
-
-        return result;
-    }
-
-    if (path === '/') {
-        return 'Банк семинаров';
-    }
-
-    return '';
-};
-
-const Header = ({
-    query,
-    loading,
-    setSearchQuery
-}: {
+type props = {
     query: IFilterQuery;
     loading: ILoadingState;
     setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>;
-}) => {
+};
+
+const Header: React.FC<props> = ({ query, loading, setSearchQuery }) => {
     /*
      * Hooks definitions
      */
-    const history = useHistory();
-
-    useEffect(() => {}, [loading]);
-
-    /*
-     * Animations
-     */
-    const headerVariants = {
-        expanded: {
-            height: '100vh'
-        },
-        collapsed: {
-            height: '10vh'
-        }
-    };
-
-    const transition: Transition = {
-        duration: 0.5,
-        ease: 'linear'
-    };
+    const { pathname } = useLocation();
 
     return (
         <motion.header
             id="name"
             variants={headerVariants}
-            transition={transition}
+            transition={headerTransition}
             animate={loading.fetching ? 'expanded' : 'collapsed'}
             initial="expanded"
         >
-            <h1>{genName(query, history.location.pathname, loading.error)}</h1>
+            <h1>{genName(query, pathname, loading.error)}</h1>
             {loading.fetching ? (
                 <motion.div
                     id="loadingLogo"
                     animate={{ rotate: 360 }}
-                    transition={{ loop: Infinity, ease: 'linear', duration: 3 }}
+                    transition={loadingLogoTransition}
                 >
                     <Logotype setSearchQuery={setSearchQuery} />
                 </motion.div>
diff --git a/src/Header/utils.ts b/src/Header/utils.ts
new file mode 100644
index 0000000..f35b2a7
--- /dev/null
+++ b/src/Header/utils.ts
@@ -0,0 +1,40 @@
+import { IFilterQuery } from '../types';
+
+const genName = (
+    searchQuery: IFilterQuery,
+    path: string,
+    error: string
+): string => {
+    if (error) {
+        return error.toString();
+    }
+    if (path === '/list' && searchQuery) {
+        let result = '';
+
+        if (searchQuery.class_num) {
+            result = result + searchQuery.class_num + ' класс';
+        }
+
+        if (searchQuery.predmet_type) {
+            result = result + ' ' + searchQuery.predmet_type;
+        }
+
+        if (searchQuery.teacher) {
+            result = result + ' ' + searchQuery.teacher;
+        }
+
+        if (searchQuery.search) {
+            result = result + ' поиск по "' + searchQuery.search + '"';
+        }
+
+        return result;
+    }
+
+    if (path === '/') {
+        return 'Банк семинаров';
+    }
+
+    return '';
+};
+
+export { genName };
diff --git a/src/Home/handlers.ts b/src/Home/handlers.ts
new file mode 100644
index 0000000..1dea41a
--- /dev/null
+++ b/src/Home/handlers.ts
@@ -0,0 +1,20 @@
+import { Dispatch, SetStateAction } from 'react';
+import { IFilterQuery } from '../types';
+
+const handleShowMore = (
+    predmet_type: string,
+    class_num: number,
+    setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>
+) => {
+    setSearchQuery(
+        (prev): IFilterQuery => {
+            return {
+                ...prev,
+                predmet_type,
+                class_num: class_num.toString()
+            };
+        }
+    );
+};
+
+export { handleShowMore };
diff --git a/src/Home/index.tsx b/src/Home/index.tsx
index e4a51d1..eeb0854 100644
--- a/src/Home/index.tsx
+++ b/src/Home/index.tsx
@@ -4,15 +4,15 @@ import { Link } from 'react-router-dom';
 import Card from '../Card';
 import NothingFound from '../NothingFound';
 import { IData, IFilterQuery, ILoadingState } from '../types';
+import { handleShowMore } from './handlers';
 import './main.css';
 
-const Home = ({
-    setLoading,
-    setSearchQuery
-}: {
+type props = {
     setLoading: Dispatch<SetStateAction<ILoadingState>>;
     setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>;
-}) => {
+};
+
+const Home: React.FC<props> = ({ setLoading, setSearchQuery }) => {
     const [data, setData] = useState<IData[]>([]);
 
     useEffect(() => {
@@ -38,18 +38,6 @@ const Home = ({
         ...Array.from(new Set(data.map((el) => el.predmet_type).sort()))
     ];
 
-    const handleShowMore = (predmet_type: string, class_num: number) => {
-        setSearchQuery(
-            (prev): IFilterQuery => {
-                return {
-                    ...prev,
-                    predmet_type,
-                    class_num: class_num.toString()
-                };
-            }
-        );
-    };
-
     return (
         <main className="homeContainer">
             {classes.length ? (
@@ -87,7 +75,8 @@ const Home = ({
                                                 onClick={() =>
                                                     handleShowMore(
                                                         subject,
-                                                        class_num
+                                                        class_num,
+                                                        setSearchQuery
                                                     )
                                                 }
                                                 to={'/list'}
diff --git a/src/Logotype/index.tsx b/src/Logotype/index.tsx
index 18e7bfa..c1fa348 100644
--- a/src/Logotype/index.tsx
+++ b/src/Logotype/index.tsx
@@ -4,13 +4,13 @@ import { Link } from 'react-router-dom';
 import { emptyQuery } from '../Navbar/utils';
 import { IFilterQuery } from '../types';
 import LogoImage from './logo.png';
-import './main.css'
+import './main.css';
 
-const Logotype = ({
-    setSearchQuery
-}: {
+type props = {
     setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>;
-}) => {
+};
+
+const Logotype: React.FC<props> = ({ setSearchQuery }) => {
     return (
         <Link
             to="/"
diff --git a/src/Navbar/animations.ts b/src/Navbar/animations.ts
new file mode 100644
index 0000000..01d3e5d
--- /dev/null
+++ b/src/Navbar/animations.ts
@@ -0,0 +1,45 @@
+import { Transition, Variants } from 'framer-motion'
+
+const searchVariants: Variants = {
+    open: {
+        width: 'calc(100vw - 4vh)',
+        display: 'block'
+    },
+    closed: {
+        width: '6vh',
+        transitionEnd: {
+            display: 'none'
+        }
+    }
+};
+
+const navVariants: Variants = {
+    open: {
+        height: '100vh',
+        borderTopLeftRadius: 0,
+        borderTopRightRadius: 0
+    },
+    closed: {
+        height: '10vh',
+        borderTopLeftRadius: '20px',
+        borderTopRightRadius: '20px'
+    }
+};
+
+const filtersVariants: Variants = {
+    open: {
+        height: '100vh',
+        padding: '2vh'
+    },
+    closed: {
+        height: 0,
+        padding: 0
+    }
+};
+
+const transition: Transition = {
+    ease: 'easeIn',
+    duration: 0.5
+};
+
+export { filtersVariants, navVariants, searchVariants, transition };
diff --git a/src/Navbar/handlers.ts b/src/Navbar/handlers.ts
new file mode 100644
index 0000000..5ee8e62
--- /dev/null
+++ b/src/Navbar/handlers.ts
@@ -0,0 +1,49 @@
+import { Dispatch, RefObject, SetStateAction } from 'react';
+import { IFilterQuery } from '../types';
+
+const handleFiltersButton = (
+    filtersCollapsed: boolean,
+    localFilters: Partial<IFilterQuery>,
+    setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>,
+    setFiltersCollapsed: Dispatch<SetStateAction<boolean>>
+) => {
+    if (!filtersCollapsed) {
+        setSearchQuery((prev) => {
+            return { ...prev, ...localFilters };
+        });
+    }
+    setFiltersCollapsed((prev) => !prev);
+};
+
+const handleSelectChange = (
+    element: HTMLSelectElement,
+    setLocalFilters: Dispatch<SetStateAction<Partial<IFilterQuery>>>
+) => {
+    setLocalFilters((prev) => {
+        return { ...prev, [element.name]: element.value };
+    });
+};
+
+const handleSearchButton = (
+    searchCollapsed: boolean,
+    setSearchCollapsed: Dispatch<SetStateAction<boolean>>,
+    setInputFocus: () => void,
+    searchInputRef: RefObject<HTMLInputElement>,
+    setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>
+) => {
+    if (searchCollapsed) {
+        setSearchCollapsed(false);
+        setInputFocus();
+    } else if (searchInputRef && searchInputRef.current) {
+        const value = searchInputRef.current.value;
+
+        setSearchQuery((prev) => {
+            return { ...prev, search: value };
+        });
+        setSearchCollapsed(true);
+
+        searchInputRef.current.value = '';
+    }
+};
+
+export { handleFiltersButton, handleSelectChange, handleSearchButton };
diff --git a/src/Navbar/index.tsx b/src/Navbar/index.tsx
index 4e44cc4..fc0065e 100644
--- a/src/Navbar/index.tsx
+++ b/src/Navbar/index.tsx
@@ -1,5 +1,4 @@
 import React, {
-    ChangeEvent,
     Dispatch,
     SetStateAction,
     useEffect,
@@ -14,25 +13,31 @@ import SearchIcon from './search.svg';
 import { IFilterQuery } from '../types';
 import { useFocus } from '../utils';
 import Logotype from '../Logotype';
+import {
+    filtersVariants,
+    navVariants,
+    searchVariants,
+    transition
+} from './animations';
+import {
+    handleFiltersButton,
+    handleSearchButton,
+    handleSelectChange
+} from './handlers';
 
-const Navbar = ({
-    setSearchQuery,
-    query
-}: {
+type props = {
     setSearchQuery: Dispatch<SetStateAction<IFilterQuery>>;
     query: IFilterQuery;
-}) => {
-    /*
-     * Hooks
-     */
+};
 
+const Navbar: React.FC<props> = ({ setSearchQuery, query }) => {
     const [searchCollapsed, setSearchCollapsed] = useState(true);
     const [filtersCollapsed, setFiltersCollapsed] = useState(true);
-    const [localFilters, setLocalFilters] = useState<Partial<IFilterQuery>>();
+    const [localFilters, setLocalFilters] = useState<Partial<IFilterQuery>>({});
 
-    const searchInput = useRef<HTMLInputElement>(null);
+    const searchInputRef = useRef<HTMLInputElement>(null);
 
-    const setInputFocus = useFocus(searchInput);
+    const setInputFocus = useFocus(searchInputRef);
 
     const formRef = useRef<HTMLFormElement>(null);
 
@@ -48,89 +53,6 @@ const Navbar = ({
         }
     }, [query]);
 
-    /*
-     * Animations
-     */
-
-    const searchVariants = {
-        open: {
-            width: 'calc(100vw - 4vh)',
-            display: 'block'
-        },
-        closed: {
-            width: '6vh',
-            transitionEnd: {
-                display: 'none'
-            }
-        }
-    };
-
-    const navVariants = {
-        open: {
-            height: '100vh',
-            borderTopLeftRadius: 0,
-            borderTopRightRadius: 0
-        },
-        closed: {
-            height: '10vh',
-            borderTopLeftRadius: '20px',
-            borderTopRightRadius: '20px'
-        }
-    };
-
-    const filtersVariants = {
-        open: {
-            height: '100vh',
-            padding: '2vh'
-        },
-        closed: {
-            height: 0,
-            padding: 0
-        }
-    };
-
-    const transition = {
-        ease: 'easeIn',
-        duration: 0.5
-    };
-
-    /*
-     * Input handlers
-     */
-
-    const handleFiltersButton = () => {
-        if (!filtersCollapsed) {
-            setSearchQuery((prev) => {
-                return { ...prev, ...localFilters };
-            });
-        }
-        setFiltersCollapsed((prev) => !prev);
-    };
-
-    const handleSelectChange = ({
-        target: element
-    }: ChangeEvent<HTMLSelectElement>) => {
-        setLocalFilters((prev) => {
-            return { ...prev, [element.name]: element.value };
-        });
-    };
-
-    const handleSearchButton = () => {
-        if (searchCollapsed) {
-            setSearchCollapsed(false);
-            setInputFocus();
-        } else if (searchInput && searchInput.current) {
-            const value = searchInput.current.value;
-
-            setSearchQuery((prev) => {
-                return { ...prev, search: value };
-            });
-            setSearchCollapsed(true);
-
-            searchInput.current.value = '';
-        }
-    };
-
     return (
         <motion.header
             id="navbar"
@@ -146,7 +68,14 @@ const Navbar = ({
                 <button
                     className="navButton"
                     id="filter"
-                    onClick={handleFiltersButton}
+                    onClick={() =>
+                        handleFiltersButton(
+                            filtersCollapsed,
+                            localFilters,
+                            setSearchQuery,
+                            setFiltersCollapsed
+                        )
+                    }
                 >
                     <img src={FilterIcon} alt="Фильтр" />
                 </button>
@@ -154,7 +83,15 @@ const Navbar = ({
                 <button
                     className="navButton"
                     id="search"
-                    onClick={handleSearchButton}
+                    onClick={() =>
+                        handleSearchButton(
+                            searchCollapsed,
+                            setSearchCollapsed,
+                            setInputFocus,
+                            searchInputRef,
+                            setSearchQuery
+                        )
+                    }
                 >
                     <img src={SearchIcon} alt="Поиск" />
                 </button>
@@ -163,10 +100,16 @@ const Navbar = ({
                     variants={searchVariants}
                     transition={transition}
                     aria-label="Поиск"
-                    ref={searchInput}
+                    ref={searchInputRef}
                     onKeyDown={(e) => {
                         if (e.key === 'Enter') {
-                            handleSearchButton();
+                            handleSearchButton(
+                                searchCollapsed,
+                                setSearchCollapsed,
+                                setInputFocus,
+                                searchInputRef,
+                                setSearchQuery
+                            );
                         }
                     }}
                     type="search"
@@ -188,7 +131,9 @@ const Navbar = ({
                     </label>
                     <select
                         name="teacher"
-                        onChange={handleSelectChange}
+                        onChange={(e) =>
+                            handleSelectChange(e.target, setLocalFilters)
+                        }
                         id="teacherFilter"
                     >
                         <option value="">-</option>
@@ -213,7 +158,9 @@ const Navbar = ({
                     </label>
                     <select
                         name="type_num"
-                        onChange={handleSelectChange}
+                        onChange={(e) =>
+                            handleSelectChange(e.target, setLocalFilters)
+                        }
                         id="typeFilter"
                     >
                         <option value="">-</option>
@@ -228,7 +175,9 @@ const Navbar = ({
                     </label>
                     <select
                         name="predmet_type"
-                        onChange={handleSelectChange}
+                        onChange={(e) =>
+                            handleSelectChange(e.target, setLocalFilters)
+                        }
                         id="predmetFilter"
                     >
                         <option value="">-</option>
@@ -243,7 +192,9 @@ const Navbar = ({
                     </label>
                     <select
                         name="class_num"
-                        onChange={handleSelectChange}
+                        onChange={(e) =>
+                            handleSelectChange(e.target, setLocalFilters)
+                        }
                         id="classFilter"
                     >
                         <option value="">-</option>
diff --git a/src/NothingFound/index.tsx b/src/NothingFound/index.tsx
index 331af00..8f50867 100644
--- a/src/NothingFound/index.tsx
+++ b/src/NothingFound/index.tsx
@@ -4,11 +4,11 @@ import './main.css';
 import icon from './icon.svg';
 import { ILoadingState } from '../types';
 
-const NothingFound = ({
-    setLoading
-}: {
+type props = {
     setLoading?: Dispatch<SetStateAction<ILoadingState>>;
-}) => {
+};
+
+const NothingFound: React.FC<props> = ({ setLoading }) => {
     useEffect(() => {
         if (!setLoading) return;
 
diff --git a/src/SubjectList/index.tsx b/src/SubjectList/index.tsx
index 8f0c891..9a49fa2 100644
--- a/src/SubjectList/index.tsx
+++ b/src/SubjectList/index.tsx
@@ -7,13 +7,12 @@ import Card from '../Card';
 import './main.css';
 import NothingFound from '../NothingFound';
 
-const SubjectList = ({
-    setLoading,
-    searchQuery
-}: {
+type props = {
     setLoading: Dispatch<SetStateAction<ILoadingState>>;
     searchQuery: IFilterQuery;
-}) => {
+};
+
+const SubjectList: React.FC<props> = ({ setLoading, searchQuery }) => {
     const [data, setData] = useState<IData[]>([]);
 
     const { push: historyPush } = useHistory();