Сергей

*,
::before,
::after {
    padding: 0;
    margin: 0;

    -webkit-box-sizing: border-box;
       -moz-box-sizing: border-box;
         -o-box-sizing: border-box;
            box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-font-smoothing: subpixel-antialiased;
    text-rendering: geometricPrecision;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, Helvetica Neue, sans-serif;

    -webkit-font-smoothing: subpixel-antialiased;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-touch-callout: none;
}

html,
body {
    height: 100%;
    min-height: 100%;
    font-feature-settings: kern 1, liga 1, calt 1, pnum 1, tnum 0, onum 1, lnum 0, dlig 0;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {font-weight: 400;}

h1  {font-size: 2.2em;}
h2  {font-size: 1.9em;}
h3  {font-size: 1.65em;}
h4  {font-size: 1.4em;}
h5  {font-size: 1.2em;}
h6  {font-size: 1em;}

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

[hidden],
template {
    display: none;
}

a {
    background: transparent;
    text-decoration: none;
    cursor: pointer;
}

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

img {
    border: 0;
}

ul,
li {
    outline: 0;
    border: 0;
    list-style: none;
}

abbr {
    cursor: help;
    font-feature-settings: kern 1, liga 1, calt 1, pnum 1, tnum 0, onum 1, lnum 0, smcp 1, c2sc 1;
}

abbr[title] {
    text-decoration: none;
    border-bottom: 1px dotted;
}

b,
strong {
    font-weight: 700;
}

dfn {
    font-style: italic;
}

mark {
    background: #ff0;
    color: #000;
}

time {
    font-feature-settings: kern 1, liga 1, calt 1, pnum 1, tnum 0, onum 1, lnum 0;
}

small {
    font-weight: 400;
    font-size: 80%;
}

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sup {
    top: -0.5em;
    font-feature-settings: kern 1, liga 1, calt 1, pnum 1, tnum 0, onum 1, lnum 0, dlig 0, sups 1;
}

sub {
    bottom: -0.25em;
    font-feature-settings: kern 1, liga 1, calt 1, pnum 1, tnum 0, onum 1, lnum 0, dlig 0, subs 1;
}

svg:not(:root) {
    overflow: hidden;
}

hr {
    height: 0;
    -webkit-box-sizing: content-box;
    -moz-box-sizing: content-box;
    box-sizing: content-box;
}

pre {
    overflow: auto;
}

code,
kbd,
pre,
samp {
    font-family: "Source Code Pro", Consolas", "Courier New", SFMono-Regular, Menlo, Monaco, monospace;
    font-size: 0.8em;
    font-feature-settings: kern 0, liga 0, calt 1, dlig 0, pnum 0, tnum 1, onum 0, lnum 1, zero 1;
}

button,
form,
input,
optgroup,
select,
textarea {
    outline: 0;
    color: inherit;
    font: inherit;
}

button,
select {
    border: 0;
    text-transform: none;
}

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
    -webkit-appearance: button;
    cursor: pointer;
}

button:not(:disabled),
[type="button"]:not(:disabled),
[type="reset"]:not(:disabled),
[type="submit"]:not(:disabled) {
  cursor: pointer;
}

button[disabled],
html input[disabled] {
    cursor: default;
}

button::-moz-focus-inner,
input::-moz-focus-inner {
    border: 0;
}

input {
    line-height: normal;
}

input[type="radio"],
input[type="checkbox"] {
    box-sizing: border-box;
    padding: 0;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    height: auto;
}

input[type="search"] {
    -webkit-appearance: textfield;
    -moz-box-sizing: content-box;
    -webkit-box-sizing: content-box;
    box-sizing: content-box;
}

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

input[type="color"],
input[type="date"],
input[type="datetime"],
input[type="datetime-local"],
input[type="number"],
input[type="range"],
input[type="tel"],
input[type="week"] {
    font-feature-settings: kern 0, liga 1, calt 1, pnum 1, tnum 0, onum 0, lnum 1, zero 0;
}

fieldset {
    border: 1px solid silver;
    margin: 0 2px;
    padding: 0.35em 0.625em 0.75em;
}

legend {
    border: 0;
}

textarea {
	resize: vertical;
    overflow: auto;
}

optgroup {
    font-weight: 700;
}

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

tbody,
caption {
    font-feature-settings: kern 1, liga 1, calt 1, pnum 0, tnum 1, onum 0, lnum 1, zero 1;
}