/* === Reset & Box Model === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* === Base Typography === */
body, html {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background-color: #ffffff;
  color: #333;
}

/* === Headings === */
h1, h2, h3, h4, h5, h6 {
  margin: 1em 0 0.5em;
  font-weight: 600;
}

/* === Paragraphs === */
p {
  margin-bottom: 1em;
}

/* === Links === */
a {
  color: #007bff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* === Lists === */
ul {
  list-style-type: none;
  padding-left: 0;
}

/* === Tables === */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
}

th, td {
  padding: 0.75em;
  border: 1px solid #ccc;
  text-align: left;
}

/* === Images === */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* === Blockquote (for Tweets) === */
blockquote {
  margin: 1.5em 0;
  padding-left: 1em;
  border-left: 4px solid #ccc;
  color: #555;
  font-style: italic;
}

/* === Basic Layout Elements === */
header, footer {
  padding: 1em;
  background-color: #f0f0f0;
}

main {
  padding: 1em;
}

/* === Navigation === */
header ul {
  display: flex;
  gap: 1em;
}

header li {
  list-style: none;
}