* {
  box-sizing: border-box;
    background-color: black;
    color:white;
}
.row::after {
  content: "";
  clear: both;
  display: table;
}

[class*="col-"] {
  float: left;
  padding: 15px;
  border: 1px solid black;
    background-color: black;
    color:white;
}

.col-1 {width: 25%;}
.col-2 {width: 25%;}
.col-3 {width: 25%;}
.col-4 {width: 25%;}


table {
  font-family: arial, sans-serif;
  border-collapse: collapse;
  width: 100%;
}

td, th {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
}

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