* {
  font-family: sans-serif;
}

body {
  margin: 20px auto;
  max-width: 500px;
  padding: 5px;
}

.attend-table {
  width: 100%;
}
.attend-table td:last-child {
  width: 1px;
  white-space: nowrap;
}

h4 {
  margin: 0;
}
.sub-content {
  font-weight: normal;
  font-size: smaller;
}

.attend-button-group {
  display: block;
  background-color: #f1f1f1;
  border-radius: 5px;
}
.attend-button-group label:first-of-type {
  border-radius: 5px 0px 0px 5px;
}
.attend-button-group label:last-of-type {
  border-radius: 0px 5px 5px 0px;
}

.attend-button-group .content {
  display: inline-block;
  text-align: center;
  padding: 10px;
  line-height: 1;
  border-radius: 5px;
}
.attend-button-group label:hover {
  background-color: #f1f1f1;
}

input[type="radio"] {
  display: none;
}
label {
  display: inline-block;
}
input[type="radio"]:checked + .no-contact-button {
  background-color: #add3ec;
}
input[type="radio"]:checked + .attend-button {
  background-color: #67bd8c;
}
input[type="radio"]:checked + .absence-button {
  background-color: #d87a72;
}