button {
     padding: 10px;
     font-size: 16px;
     margin: 5px;
 }
.homelink
{
    display: block;
    float: left;
    padding: 14px 16px;
    color: white;
}
.dropdown1
{
    display: block;
    float: left;
}
.dropdown2 {
    display: block;
    float: left;
}
.dropdown3 {
    display: block;
    float: left;
}
.dropdown4 {
    display: block;
    float: left;
}

.dropdown-content
{
    display: none;
    position: absolute;
}

.dropdown-content a {
    display: block;
    padding: 12px 16px;
    background-color: darkslategrey;
    color: white;
}

.dropdown1:hover .dropdown-content {
    display: block;
}

.dropdown2:hover .dropdown-content {
    display: block;
}

.dropdown3:hover .dropdown-content {
    display: block;
}

.dropdown4:hover .dropdown-content {
    display: block;
}

.navbar
{ 
    background-color: darkgrey;
    overflow: hidden;
}

.navbar a
{
    float: left;
    padding: 14px 16px;
    text-align: center;
}

.dropdown1 .dropbtn
{
    outline: none;
    padding: 14px 16px;
    border: none;
}
.dropdown2 .dropbtn {
    outline: none;
    padding: 14px 16px;
    border: none;
}
.dropdown3 .dropbtn {
    outline: none;
    padding: 14px 16px;
    border: none;
}
.dropdown4 .dropbtn {
    outline: none;
    padding: 14px 16px;
    border: none;
}

table, th, td {
      border: 1px solid black;
      border-collapse: collapse;
  }
  th, td {
      padding: 5px;
      text-align: left;
  }
  table#t01 tr:nth-child(even) {
      background-color: #ccc;
  }
  table#t01 tr:nth-child(odd) {
      background-color: #fff;
  }
  table#t01 th {
      background-color: black;
  }
  th {
      color: white;
  }
  table.center {
	    margin-left:auto; 
	    margin-right:auto;
  }