body {
    margin: 0;
    padding: 0;
    background-color: rgb(0, 0, 0);
  }  
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #0c0c0c;
    color: #fff;
    padding: 10px 20px;
    margin-bottom: 10em;
}
.nav-left {
    display: flex;
    align-items: center;
  }

.window {
    position: relative;
    margin: auto;
    max-width: 800px;
    height: 400px;
    background-color: #0c0c0c;
    color: #fff;
    font-family: Consolas, "Courier New", monospace;
    overflow: hidden;
    border-radius: 8px;
    border-color:#2e2e2e;
    border-style: solid;
    border-width: 1px;
  }
  .window p {
    line-height: 0.0em;
  }
  .logo {
    font-size: 24px;
    margin: 0;
    font-family: Consolas, "Courier New", monospace;
  }
  .logo a {
    text-decoration: none;
    color: rgb(255, 255, 255);
  }
  .nav-right {
    display: flex;
    align-items: center;
  }
  .login-button, .register-button {
  display: inline-block;
  color: rgb(255, 255, 255);
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  margin-left: 10px;
  font-family: Consolas, "Courier New", monospace;
}
.login-button:hover, .register-button:hover {
  color: #20C20E;
}

  .title-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background-color: #2e2e2e;
    display: flex;
    align-items: center;
    padding: 0 5px;
    box-sizing: border-box;
  }
  
  .title-bar-text {
    font-size: 14px;
    font-family: Consolas, "Courier New", monospace;
  }
  
  .content {
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 10px;
    box-sizing: border-box;
    overflow-y: auto;
  }
  
  .prompt {
    display: inline-block;
    width: 30px;
    margin-right: 10px;
  }
  
 #command-input, #username, #password, #regUsername, #regPassword {
    color: #fff;
    background-color: transparent;
    border: none;
    font-family: Consolas, "Courier New", monospace;
    font-size: 16px;
    margin-left: -10.5px;
  }
  #command-input:focus, #username:focus, #password:focus, #regUsername:focus, #regPassword:focus {
    outline: none;
  }
  #command-output {
    color: #fff;
    line-height: 130%;
  }

  footer {
    color: #fff;
    font-size: 16px;
    font-family: Consolas, "Courier New", monospace;
    background-color: #0c0c0c;
    padding: 10px;
    text-align: center;
    margin-top: 13.95em;
  }