* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #F5F5F5;
    background-color: #000;
  }
  
  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background-color: rgba(0, 0, 0, 0.8);
  }
  
  nav {
    display: flex;
    gap: 20px;
  }
  
  nav a {
    color: #F5F5F5;
    text-decoration: none;
    font-size: 1rem;
  }
  
  nav a:hover {
    text-decoration: underline;
  }
  
  .auth-buttons {
    display: flex;
    gap: 15px;
  }
  
  .auth-buttons a {
    padding: 2px 4px;
    font-size: 1rem;
    color: #007BFF;
    background-color: #F5F5F5;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-decoration: none;
  }
  
  .auth-buttons a:hover {
    background-color: #007BFF;
    color: #F5F5F5;
  }
  
  .logo{
    color: #007BFF;
    text-decoration: none;
  }
  .logo:visited {
    color: #007BFF; /* 방문 여부와 상관없이 동일한 색상 */
    text-decoration: none; /* 밑줄 제거 */
  }