style.css

html {
  width: 80%;
  height: 80%;
  margin: auto;
}

#content {
  background-image: url("/images/dark-bg.jpg");
  width: 95%;
  height: 95%;
}

div {
  background-color:rgba(0, 0, 0, 0);
}

table {
  font-family: arial, sans-serif;
  border-collapse: collapse;
  background-color:rgba(0, 0, 0, 0);
  padding: 15px;
}  

tbody {
  background-color:rgba(0, 0, 0, 0);
}

.head {
  text-align: center;
}

.white {
  background-color: white;
}

.wrapper {
  margin-left:auto;
  margin-right:auto;
  background-color:rgba(0, 0, 0, 0);
}

.user-commands td, th {
  border: 1px solid black;
  text-align: left;
  padding: 8px;
}

.user-commands tr:nth-child(even) {
  background-color: #dddddd;
}

.user-commands tr:nth-child(odd) {
  background-color: white;
}

.mod-commands td, th {
  border: 1px solid black;
  text-align: left;
  padding: 8px;
}

.mod-commands tr:nth-child(even) {
  background-color: #dddddd;
}

.mod-commands tr:nth-child(odd) {
  background-color: white;
}

.sub-commands td, th {
  border: 1px solid black;
  text-align: left;
  padding: 8px;
}

.sub-commands tr:nth-child(even) {
  background-color: #dddddd;
}

.sub-commands tr:nth-child(odd) {
  background-color: white;
}

h1 {
  text-align: center;
  background-color:rgba(0, 0, 0, 0);
  color: white;
}