* {
    box-sizing: border-box;
}

/* Your css goes here */
header {
    background-image: url('junkshelf.jpg');
    height: 200px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

header h1 {
    margin: 0;
    color: #ffffff;
    text-align: center;
    font-size: 3.5em;
    line-height: 2em;
}

footer {
    margin-top: 20px;
    border-top: 3px solid red;
    text-align: center;
    font-style: italic;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: #f9f9f9;
    margin-bottom: 20px;
}

th, td {
    padding: 12px;
    border: 1px solid #dddddd;
    text-align: left;
}

thead th {
    background-color: #333333;
    color: #ffffff;
}

tfoot td, tfoot th {
    background-color: #eeeeee;
    font-weight: bold;
}
@media screen and (max-width: 719px) {
   table, thead, tbody, th, td, tr {
      display: block;
   }

   thead tr {
      position: absolute;
      top: -9999px;
      left: -9999px;
   }

   tr {
      margin-bottom: 1.5rem;
      border: 1px solid #ccc;
   }

   td {
      border: none;
      border-bottom: 1px solid #eee;
      position: relative;
      padding-left: 50%;
      text-align: right;
   }

   td:before {
      position: absolute;
      top: 50%;
      left: 10px;
      transform: translateY(-50%);
      width: 45%;
      padding-right: 10px;
      text-align: left;
      font-weight: bold;
      content: attr(data-label);
   }
}