body {
  margin: 0;
  font-family: 'Be Vietnam Pro', Arial, sans-serif;
  background: #fff;
  color: #000;
  line-height: 1.6;
}

a {
  color: black;
  text-decoration: none;
}
a:hover,
a:focus {
  text-decoration: underline;
}
.container {
  max-width: 960px;
  margin: 40px auto;
  padding: 0 20px;
}
header {
  text-align: center;
  margin-bottom: 40px;
}
header h1 {
  margin-bottom: 5px;
  font-size: 2.5em;
  font-weight: bold;
}
header h2 {
  margin-top: 0;
  font-weight: normal;
  font-size: 1.3em;
  font-style: italic;
}
header p {
  margin: 2px 0;
}
header address {
  font-style: normal;
  margin-top: 10px;
  font-size: 0.9em;
  color: #222;
}
h3 {
  border-bottom: 2px solid #000;
  padding-bottom: 5px;
  margin-top: 40px;
  margin-bottom: 20px;
  text-transform: uppercase;
  font-size: 1.4em;
  letter-spacing: 0.05em;
}
.two-columns {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
aside {
  flex: 1 1 30%;
  background: #f9f9f9;
  padding: 20px;
  border: 1px solid #000;
  box-sizing: border-box;
}
main {
  flex: 1 1 65%;
  padding: 20px;
  border: 1px solid #000;
  box-sizing: border-box;
}
article h4 {
  margin-block-end:0;
  font-size: 1.2em;
}
ul {
  list-style-type: disc;
  padding-left: 20px;
  margin-top: 0;
  margin-bottom: 20px;
}
li {
  margin-bottom: 0.5em;
}
@media (max-width: 768px) {
  .two-columns {
    flex-direction: column;
  }
  aside,
  main {
    flex: 1 1 100%;
  }
}