body {
  background-color: whitesmoke;
  background-size: cover;
  text-align: center;
}
.header-container {
  background-color: whitesmoke;
  padding: 15px 20px;
  position: relative;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo-button {
  border: none;
  height: 40px;
  width: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.logo-button img {
  height: 100%;
  width: auto;
  max-width: 100%;
}

.nav-menu {
  display: flex;
  gap: 10px;
  flex-grow: 1;
  justify-content: center;
}

.nav-menu button {
  background-color: whitesmoke;
  color: black;
  border: 1px solid #ddd;
  border-radius: 0;
  width: 100px;
  height: 40px;
  font-family: 'Times New Roman', Times, serif;
  cursor: pointer;
  transition: background-color 0.3s;
}

.nav-menu button:hover {
  background-color: lightgray;
}

.mobile-menu-toggle {
  display: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
  z-index: 100;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: black;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .menu-toggle {
      display: flex;
  }
  
  .nav-menu {
      position: fixed;
      top: 70px;
      left: -100%;
      width: 100%;
      height: calc(100vh - 70px);
      background-color: whitesmoke;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      padding-top: 20px;
      transition: left 0.3s ease;
      gap: 20px;
  }
  
  .mobile-menu-toggle:checked ~ .nav-menu {
      left: 0;
  }
  
  .mobile-menu-toggle:checked + .menu-toggle span:nth-child(1) {
      transform: translateY(9px) rotate(45deg);
  }
  
  .mobile-menu-toggle:checked + .menu-toggle span:nth-child(2) {
      opacity: 0;
  }
  
  .mobile-menu-toggle:checked + .menu-toggle span:nth-child(3) {
      transform: translateY(-9px) rotate(-45deg);
  }
  
  .logo-button {
      margin-right: auto;
  }
}
  select {
    padding: 10px;
    margin: 0 10px 20px;
    font-size: 16px;
    border: 2px solid #ccc;
    border-radius: 8px;
    background-color: white;
    color: #333;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
  }
  
  select:hover {
    border-color: #888;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  }
  .comparison-table {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    max-width: 800px;
    margin: auto;
    background: white;
    border: 1px solid whitesmoke;
    border-radius: 8px;
  }
  .comparison-table div {
    padding: 10px;
    border-bottom: 1px solid whitesmoke;
    border-right: 1px solid whitesmoke;
  }
  .comparison-table div:nth-child(3n) {
    border-right: none;
  }
  .header {
    background: lightgray;
    font-weight: bold;
  }