* { box-sizing: border-box }

html, body {
    min-height: 100vh;
    background-color: #f2f2f2;
    margin: 0;
    padding: 0;
}
body {
    font: normal normal lighter 18px/1.15em sans-serif;
    color: #212121;
}
a { color: inherit }
p, ul, ol, dl {
    margin-bottom: 1em;
}
ul > li, ol > li {
    margin-bottom: .33em;
}
h2, h3, h4, h5, h6 {
    margin: .5em 0 1em 0;
    line-height: 1.25em;
    font-weight: 600;
}
h2 { font-size: 1.5rem }
h3 { font-size: 1.25rem }
h4 { font-size: 1.15rem }
h5 { font-size: .95rem }
h6 { font-size: .85rem }

body > header,
main {
    width: 100vw;
    max-width: 70rem;
    margin: 0 auto;
}

body > header > h1 {
    font-size: 2rem;
    line-height: 1em;
    margin: .5em 0;
}

section { margin-top: 2rem }
.hide { display: none }
section.introduction {
    columns: 32rem 2;
    column-gap: 2rem;
}

ul.rankings {
    list-style-type: none;
}

li.ranking {
    padding: 10px 0;
    border-top: 1px solid #555555;
    width:90%;
}
li.ranking table {
    width: 100%;
}
li.ranking th.city { width: 37.5% }
li.ranking th.response-time {
    width: 31.25%;
    text-align: center;
}
li.ranking th.success-rate {
    width: 31.25%;
    text-align: center;
}
li.ranking td.city {}
li.ranking td.response-time { text-align: center }
li.ranking td.success-rate { text-align: center }
li.ranking #ranking-graph td.city { vertical-align: top }
li.ranking td.graph {
    text-align: left;
    width: 62.5%;
}
li.ranking td.graph div.response-time { background-color: orange }
li.ranking td.graph div.success-rate { background-color: lightblue }