*, *:before, *:after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  /*margin-left: calc(100vw - 100%);*/
  overflow-y: scroll;
}

body {
  font: 16px sans-serif;
  color: #555;
  line-height: 1.3;
}

h1 {
  padding: 2em 0;
  font-weight: 400;
  text-align: center;
}

p {
  margin: 0 0 1ch;
  line-height: 1.5;
}

a {
  color: orange;
  text-decoration: none;
}

main, table, address {
  max-width: 80ch;
  padding: 2ch;
  margin: auto;
  font-style: normal;
}

section {
  display: none;
  padding: 1ch 0 0;
  border-top: 1px solid #ddd;
}

#content3 {
  text-align: center;
}

footer {
  position: absolute;
  width: 100%;
  bottom: 0;
  max-width: 90ch;
  border-top: 1px solid #ddd;
  padding: 1ch 0 0;
  margin-top: 2ch;
  text-align: center;
  font-size: 85%;
}

input {
  display: none;
}

label {  
  display: inline-block;
  margin: 0 0 -1px;
  padding: 1em 2em;
  font-weight: 600;
  color: #bbb;
  border: 1px solid transparent;
}

label:hover {
  color: #888;
  cursor: pointer;
}

input:checked + label {
  color: #555;
  border: 1px solid #ddd;
  border-top: 2px solid orange;
  border-bottom: 1px solid #fff;
}

#tab1:checked ~ #content1,
#tab2:checked ~ #content2,
#tab3:checked ~ #content3 {
  display: block;
}

@media screen and (max-width: 600px) {
  label {
    display: block;
    text-align: center;
  }
  footer {
    position: static;
  }
}