html {
  font-family: 'Open Sans', sans-serif;
  height: 100%;
}

body {
  background: #f5f5f5;
  min-height: 100%;
}

h2 {
  font-size: 30px;
  color: #272727;
  margin-bottom: 20px;
}

h3 {
  font-size: 20px;
  color: #272727;
}

h4 {
  font-size: 16px;
  font-weight: bold;
  color: #606164;
  margin: 0 48px 28px 48px;
}

h5 {
  font-size: 12px;
  font-weight: bold;
  color: #272727;
  margin: 0;
}

.page,
.header,
main {
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

.page {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  height: 100vh;
}

header {
  background-color: #565656;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-box-flex: 0;
  -ms-flex: 0 0 60px;
  flex: 0 0 60px;
  width: 100%;
}

header img {
  padding: 20px 28px;
  height: 20px;
  width: auto;
}

main {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-flex: 1;
  -ms-flex: 1 0 auto;
  flex: 1 0 auto;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  margin: 24px auto;
}

.notice {
  background-color: #fff;
  border-radius: 8px;
  -webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.25);
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.25);
  padding: 24px;
  width: 768px;
}

.notice h2,
.notice h4,
.browsers {
  text-align: center;
}

.browsers {
  font-size: 0;
  list-style: none;
  padding: 0 6px;
}

.browser {
  display: inline-block;
  font-size: 14px;
  margin: 0;
  vertical-align: top;
  width: 25%;
}

.browser a {
  color: #000;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.browser-item {
  line-height: 1;
  list-style: none;
  margin: 8px 12px;
  padding: 14px 0 12px;
}
.browser-firefox .browser-icon {
  margin-top: -2px;
  margin-bottom: 2px;
}
.browser-edge .browser-icon {
  margin-top: -1px;
  margin-bottom: 1px;
}
.browser-safari .browser-icon {
  margin-top: 4px;
  margin-bottom: -4px;
}

.is-recommended .browser-item {
  border: 3px solid #000;
  border-radius: 6px;
  padding: 6px 0 12px;
  margin: 0 6px;
}

.browser-icon {
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 128px;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  margin: 0;
  text-align: center;
}

.browser-icon img {
  height: auto;
  max-width: 100%;
  width: 96px;
}

.browser-name {
  font-size: 20px;
  margin-top: 12px;
  line-height: 1.5em;
  font-weight: bold;
}