h1 {
  margin: 0;
  font-family: 'Bree Serif', serif;
  font-size: 36px;
}
.tabs {
  display: flex;
  flex-wrap: wrap;
  box-shadow: 0 48px 80px -32px rgba(0,0,0,0.3);
  max-width: 1400px;
}
.input {
  position: absolute;
  opacity: 0;
}
.label {
  width: 100%;
  padding: 20px 30px;
  background: #e5e5e5;
  cursor: pointer;
  font-weight: bold;
  font-size: 18px;
  color: rgba(26, 63, 106, 0.78);
  transition: background 0.1s, color 0.1s;
  font-family: Arial, Helvetica, Verdana, sans-serif;
}
.label:hover {
  background: #d8d8d8;
}
.label:active {
  background: #ccc;
}
.input:focus + .label {
  z-index: 1;
}
.input:checked + .label {
  background: #fff;
  color: rgba(26, 63, 106, 0.78);
}
@media (min-width: 1000px) {
  .label {
    width: auto;
  }
}
.panel {
  display: none;
  padding: 20px 30px 30px;
  background: #fff;
}
@media (min-width: 1000px) {
  .panel {
    order: 99;
  }
}
.input:checked + .label + .panel {
  display: block;
}

.center {
  margin: auto;
  width: 50%;
  padding: 10px;
}