JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" href="css/style.css">
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div class="page">

    <header class="header">
        <div class="header__shadow"></div>

        <div class="header__left">
            <div class="rectangle__red"></div>
        </div>

        <nav class="header-nav">
            <div class="header__top__nav">
                <ul class="header__top__list-nav">
                    <li class="header__top__nav-item">
                        <a class="header-top__link" href="#"> Для дома</a>
                    </li>
                    <li class="header__top__nav-item">
                        <a class="header-top__link" href="#">Для бизнеса</a>
                    </li>
                    <li class="header__top__nav-item">
                        <a class="header-top__link" href="#">О нас</a>
                    </li>
                </ul> <!--"header__top__list-nav-->

                <ul class="header__list-connection">
                    <li class="list-connection__item">
                        <a class="header-top__link connection feedback" href="#">Обратная связь</a>
                    </li>
                    <li class="list-connection__item">
                        <a class="header-top__link connection number" href="#">+7 499 941 0 755</a>
                    </li>
                </ul> <!--header__list-connection-->
            </div> <!--HEADER__TOP__NAV-->

            <div class="bottom-nav">
                <ul class="bottom-nav__link-list">
                    <li class="bottom-nav__link__item">
                        <a class="bottom-nav__link-list__item" href="#">Услуги Москва</a>
                    </li>
                    <li class="bottom-nav__link__item">
                        <a class="bottom-nav__link-list__item" href="#">Услуги Подмосковье</a>
                    </li>
                    <li...

CSS

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}

:focus {
    outline: 0;
}

article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
	display: block;
}

body {
	line-height: 1;
}

ol, ul {
	list-style: none;
}

blockquote, q {
	quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}

table {
	border-collapse: collapse;
	border-spacing: 0;
}

input[type=search]::-webkit-search-cancel-button,
input[type=search]::-webkit-search-decoration,
input[type=search]::-webkit-search-results-button,
input[type=search]::-webkit-search-results-decoration {
    -webkit-appearance: none;
    -moz-appearance: none;
}

input[type=search] {
    -webkit-appearance: none;
    -moz-appearance: none;
    -webkit-box-sizing: content-box;
    -moz-box-sizing: content-box;
    box-sizing: content-box;
}

textarea {
    overflow: auto;
    vertical-align: top;
    resize: vertical;
}

audio,
canvas,
video {
    display: inline-block;
    *display: inline;
    *zoom: 1;
    max-width: 100%;
}

audio:not([controls]) {
    display: none;
    height: 0;
}

[hidden] {
    display: none;
}

html {
    font-size: 100%; /* 1 */
    -webkit-text-size-adjust: 100%; /* 2 */
    -ms-text-size-adjust: 100%; /* 2 */
}

a:focus {
    outline: thin dotted;
}

a:active,
a:hover {
    outline: 0;
}

img {
    border: 0; /* 1 */
    -ms-interpolation-mode: bicubic; /* 2 */
}

figure {
   ...