*, *:before, *:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
table {
  border-collapse: collapse;
  width: 95%;
}
table th,

table td {
  padding: 10px;
  border: 1px solid #999;
}
table th {
  background-color: #dfdfde;
  text-align: center;
  width: 30%;
}

@media screen and (max-width: 320px) {
  table {
   border-top: 1px solid #999;
  }
  table td {
    display: block;
    text-align: center;
  }
  table th {
    display: block;
    border-top: none;
    border-bottom: none;
    width: 100%;
  }
}