options.css

* {
  box-sizing: border-box;
}

body {
  font-size: 14px;
  color: #333333;
}

p {
  margin: 24px 0;
  line-height: 1.5;
}

form {
  display: flex;
  align-items: center;
  justify-content: left;
  margin: 24px -10px;
}

fieldset {
  margin: 0 10px;
  padding: 0;
  border: 0;
}

table {
  border: 1px solid #cccccc;
  border-width: 0 1px 1px;
  border-collapse: collapse;
}

thead {
  font-weight: 500;
}

tr {
  border-top: 1px solid #cccccc;
}

thead tr {
  background: #eeeeee;
}

tbody tr:nth-of-type(even) {
  background: #fafafa;
}

td {
  padding: 10px;
}

tbody td:nth-of-type(3),
tbody td:nth-of-type(4) {
  text-align: center;
}

.btn,
.tab {
  display: inline-block;
  padding: 10px;
  border: 1px solid #999999;
  background: #cccccc;
  cursor: pointer;
  transition: 200ms;
}

.tab {
  opacity: 0.6;
}

.btn:hover,
.tab:hover,
.tab.active {
  opacity: 1;
}

.tab-pane {
  display: none;
  margin: 24px 0;
}

.tab-pane.active {
  display: block;
}