pleshevski.ru/static/styles.css

:root {
  --min-width: 320px;
  --max-width: 1024px;

  --default-color-white: #ffffff;
  --color-blue: #1966df;

  --default-font-size: 16px;
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Roboto,Oxygen-Sans, Ubuntu, Cantarell, "Segoe UI", Verdana, sans-serif;
  --font-weight-regular: 400;
}

*, *::before, *::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  background-color: var(--default-color-white);
  font-size: var(--default-font-size);
  line-height: 1;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-weight: var(--font-weight-regular);
  font-family: var(--font-family);
  min-width: var(--min-width);
}

html, body {
  height: 100%;
  width: 100%;
}

ul, ol {
  list-style: none;
}

#root {
  min-height: 100vh;
  align-items: stretch;
}

#root,
#main {
  display: flex;
  flex-direction: column;
}

#main,
.content {
  flex: 1 0;
}

.header {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.main-menu {
  display: flex;
  flex-direction: row;
}

// anim
.main-menu > a {
  transition: all .2s ease-in-out;
}

.main-menu > a {
  color: var(--color-blue);
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--color-blue);
  text-decoration: none;
}
.main-menu > a:hover,
.main-menu > a[aria-current]:not([aria-current=""]) {
  color: var(--default-color-white);
  background-color: var(--color-blue);
}
.main-menu > a:not(:last-child) {
  margin-right: 1rem;
}

.content-width {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.responsive-typography h3 {
  font-size: 24px;
}

.responsive-typography > div,
.responsive-typography p,
.responsive-typography li {
  font-size: 18px;
  line-height: 1.5;
}

.responsive-typography ul,
.responsive-typography ol {
  width: 100%;
}

.responsive-typography ul li,
.responsive-typography ol li {
  position: relative;
  width: 100%;
  min-height: 1.5rem;
  padding-left: 1.5rem;
}

.responsive-typography ul li::before,
.responsive-typography ol li::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
}

.responsive-typography ul > li::before {
  background-color: var(--color-blue);
  border-radius: 50%;
  width: 0.5rem;
  height: 0.5rem;
  margin-top: 0.5rem;
  margin-left: 0.25rem;
}

.responsive-typography > * + * {
  margin-top: 2rem;
}

.responsive-typography > div + div,
.responsive-typography p + p {
  margin-top: 1rem;
}
.responsive-typography li + li {
  margin-top: 0.5rem;
}