body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #0d0d0d;
  color: #00ff88;
  line-height: 1.6;
}
header {
  background-color: #000;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid #00ff88;
}
.logo-container {
  display: flex;
  align-items: center;
}
.logo-container img {
  width: 40px;
  height: 40px;
  margin-right: 10px;
}
.logo-container h1 {
  margin: 0;
  font-size: 24px;
  color: #00ff88;
}
nav a {
  color: #00ff88;
  margin-left: 20px;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  text-decoration: underline;
}
.container {
  padding: 30px 20px;
  max-width: 1000px;
  margin: 0 auto;
}
h1, h2, h3 {
  color: #00ff88;
}
footer {
  text-align: center;
  padding: 20px;
  background-color: #000;
  border-top: 2px solid #00ff88;
  color: #00ff88;
  margin-top: 40px;
}
img.crypto-img {
  max-width: 100%;
  height: auto;
  border: 1px solid #00ff88;
  margin: 20px 0;
}