html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  background: rgb(255, 255, 255);
  margin: 0;
  padding: 0;
  font-family: "Montserrat", sans-serif;
}

a {
  color: rgb(0, 0, 0);
  text-decoration: none;
}

a:hover {
  color: rgb(202, 202, 202);
}

.bdev {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.wrapper {
  flex: 1;
  width: 90%;
  margin: 0 auto;
}

header {
  margin: 0 auto;
  text-align: center;
}

header > img {
  width: 50%;
  padding: 10px;
}

nav {
  padding-bottom: 15px;
}

nav ul {
  text-align: center;
  padding: 5px;
  margin: 0;
  color: rgb(0, 0, 0);
}

nav ul li {
  display: inline;
  text-transform: uppercase;
  padding: 0 5px;
}

main {
  background: rgb(245, 245, 245);
  /* padding-top: 30px; */
}

section {
  padding: 5px;
  font-size: 20px;
  font-weight: 700;
  border-left: 5px solid black;
  border-bottom: 3px solid black;
}

.app {
  display: flex;
}

.app article {
  flex: 1;
  padding: 10px;
  font-weight: 500;
}

footer {
  text-align: center;
  padding-bottom: 10px;
}

@media screen and (min-width: 1000px) {
  .wrapper {
    flex: 1;
    width: 60%;
    margin: 0 auto;
  }
}