/* fix */
ul,
ol {
  margin: 0;
}
/* typography */
html,
body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.5;
  font-weight: 400;
  font-size: 17px;
}
@media (min-width: 640px) {
  html,
  body {
    font-size: 17px;
  }
}
@media (min-width: 768px) {
  html,
  body {
    font-size: 18px;
  }
}
@media (min-width: 1024px) {
  html,
  body {
    font-size: 19px;
  }
}
@media (min-width: 1280px) {
  html,
  body {
    font-size: 20px;
  }
}
@media (min-width: 1536px) {
  html,
  body {
    font-size: 21px;
  }
}
h1 {
  font-size: 2rem;
}
h2 {
  font-size: 1.82rem;
}
h3 {
  font-size: 1.66rem;
}
h4 {
  font-size: 1.5rem;
}
h5 {
  font-size: 1.32rem;
}
h6 {
  font-size: 1.16rem;
}
p {
  font-size: 1rem;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Noto Sans', sans-serif;
  margin: 0.5rem 0;
  font-weight: 700;
  width: fit-content;
}
/* layout */
body {
  background-color: #d1d5db;
  display: grid;
  grid-template-areas: "nav" "main" "footer";
}
body nav {
  grid-area: nav;
}
body main {
  margin-top: 3.5rem;
  margin-bottom: 1rem;
  grid-area: main;
  display: grid;
  grid-gap: 1rem;
  grid-auto-rows: min-content;
  align-items: start;
  grid-template-areas: "article" "sidebar";
}
@media (min-width: 768px) {
  body main {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}
@media (min-width: 1024px) {
  body main {
    grid-auto-rows: min-content;
    grid-template-areas: "article article article article article sidebar";
  }
}
body main .article {
  grid-area: article;
  display: grid;
  grid-gap: 1rem;
  grid-auto-rows: min-content;
}
body main .sidebar {
  grid-area: sidebar;
  background-color: #f1f5f9;
  padding: 0.2rem 1rem;
}
body footer {
  grid-area: footer;
  padding-top: 1rem;
}
/* color */
a {
  color: #0284c7;
}
a:active {
  color: #0369a1;
}
a:hover {
  color: #0ea5e9;
}
.la-facebook-f {
  color: #0165E1;
}
.la-github {
  color: #ffffff;
}
/* navbar */
.navbar {
  z-index: 999;
  position: fixed;
  top: 0;
  background-color: #0284c7;
  color: #ffffff;
  width: 100%;
  overflow: hidden;
  display: grid;
  grid-auto-flow: column;
  grid-template-columns: repeat(2, 1fr);
  grid-template-areas: "logo menu-btn" "menu menu";
}
@media (min-width: 768px) {
  .navbar {
    grid-template-columns: auto 1fr;
    grid-template-areas: "logo menu";
  }
}
.navbar__logo {
  padding: 0.5rem 1rem;
  grid-area: logo;
}
.navbar__logo a {
  text-decoration: none;
  color: #ffffff;
}
.navbar__menu {
  grid-area: menu;
  position: relative;
  display: grid;
  grid-auto-flow: row;
  grid-auto-rows: 1fr;
  height: 0;
}
@media (min-width: 768px) {
  .navbar__menu {
    height: auto;
    display: block;
    justify-self: end;
  }
}
.navbar__menu-btn {
  justify-self: end;
  grid-area: menu-btn;
}
@media (min-width: 768px) {
  .navbar__menu-btn {
    display: none;
  }
}
.navbar__item {
  padding: 0.5rem 0.75rem;
  width: auto;
  border: none;
  display: inline-block;
  vertical-align: middle;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background-color: inherit;
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
}
.navbar__item:hover {
  background-color: #0369a1;
  color: #ffffff;
}
/* article */
article {
  background-color: #f1f5f9;
  padding: 1rem 1rem;
}
article header {
  border-bottom: 1px solid #ddd;
}
/* footer */
.footer {
  background-color: #171717;
  color: #ffffff;
}
.footer__about {
  padding: 0.2rem 1rem;
}
.footer__social {
  padding: 0.2rem 1rem;
}
.footer__social a {
  font-size: 2rem;
}
.footer__copyright {
  padding: 0.2rem 1rem;
  border-top: 1px solid #dddddd;
  font-size: max(15px, 0.9rem);
  text-align: center;
}