body {
  margin: 0;
  height: 100vh;
  background-color: black;
  color: #39ff14; /* Neon green */
  font-family: monospace;
  display: flex;
  flex-direction: column;
  font-size:1vw;
}

header {
  background-color: #111;
  display: flex;
  justify-content:space-evenly;
  gap: 1px;
  border-bottom: 1px solid #333;
  font-size:1vw;
  font-family:monospace;
}

header button {
  background-color: black;
  color: #39ff14; /* Neon green text */
  border: 0px solid #39ff14;
  cursor: pointer;
  flex: 1;
  font-size: 18px;
  transition: background-color 0.2s ease, color 0.2s ease;
  
}

header button:hover {
  background-color: #39ff14;
  color: black;
}

.center-box {
  text-align: center;
}
.left {
  display: inline-block;
  text-align:left;
}

h3 {
  font-size: 85%;
  color: #39ff14;
}

.center-box button {
  background-color: black;
  color: #39ff14;
  border: 1px solid #39ff14;
  padding: 10px 20px;
  margin-top: 10px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.center-box button:hover {
  background-color: #39ff14;
  color: black;
}
table {
  border-collapse: collapse;
}
tr { 
  vertical-align:top;
  border-bottom : 1px green;
}
hr {
  color: #39ff14;
}