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

/* Set appropriate font and background colors for better readability */
body {
  font-family: Arial, sans-serif;
  color: #333;
  background-color: #f2f2f2;
}

/* Style the header for better visibility */
header {
  background-color: #333;
  color: #fff;
  padding: 10px;
}

nav ul {
  list-style-type: none;
  display: flex;
  justify-content: space-between;
}

nav li {
  margin: 0 10px;
}

nav a {
  color: #fff;
  text-decoration: none;
}

main {
  margin: 20px;
}

h1 {
  font-size: 36px;
  margin-bottom: 10px;
}

/* Use header tags (h1-h6) for headings to indicate their importance */
h2 {
  font-size: 28px;
  margin-bottom: 10px;
}

h3 {
  font-size: 24px;
  margin-bottom: 10px;
}

h4 {
  font-size: 20px;
  margin-bottom: 10px;
}

h5 {
  font-size: 16px;
  margin-bottom: 10px;
}

h6 {
  font-size: 14px;
  margin-bottom: 10px;
}

/* Add alt tags to images for better accessibility and search engine optimization */
img {
  max-width: 100%;
  height: auto;
}

/* Add meta tags to improve search engine optimization */
meta {
  description: "Md. Ashraful Amin's personal website showcasing his design and development work.";
  keywords: "design, development, Md. Ashraful Amin, portfolio";
}

p {
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 20px;
}

button {
  background-color: #333;
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #444;
}

/* Style the footer for better visibility */
footer {
  background-color: #333;
  color: #fff;
  padding: 10px;
  text-align: center;
}