back.css

html {
  min-width: 100%;
  min-height: 100%;
  font-family: 'Roboto', sans-serif;
  background-color: #57809e;
}

h1 {
  text-align: center;
  font-size: 3.5em;
  font-weight: 900;
  padding: 10px 0px 10px 0px;
  margin: 10px 0px 10px 0px;
  color: white;
  text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
}

fieldset {
  min-width: 90%;
  min-height: 130px;
  padding: 40px 20px 0px 20px;
  margin: 20px 20px 20px 20px;
  border-radius: 5px;
}
input {
  padding: 5px 10px 5px 10px;
}

label {
  padding: 5px 10px 5px 10px;
}

button {
  background: #88b095;
  color: black;
  font-family: 'Roboto', sans-serif;
  font-size: 17px;
  height: 25px;
  width: 150px;
  margin: 10px 10px 10px 10px;
  border: 0;
  border-radius: 5px;
  transition: all 0.3s ease 0s;
}

button:hover {
  background: #a5d6b5;
  color: #715f64;
}

.tabledata {
    display: table-cell;
    width: 100%;
    border-collapse: collapse;
    border-color: gray;
    padding-left: 130px;
}

thead {
    display: table-header-group;
    vertical-align: middle;
    border-color: inherit
}

table > tr {
    vertical-align: middle;
}

tr {
    display: table-row;
    vertical-align: inherit;
    border-color: inherit
}

td, th {
    display: table-cell;
    vertical-align: center;
    text-align: center;
    padding: 10px 10px 10px 10px;
}

th {
    font-weight: 900;
    empty-cells: hide;
}

td {
  font-weight: 300;
}

tr:nth-child(even) {background: #ccc}
tr:nth-child(odd) {background: #fff}