html {
  font-family: georgia, serif;
  font-size: 16px;
}

body {
  background: white;
  color: darkslategray;
  padding: 1em;
}

@media screen and (width >= 480px) {
  body {
    padding: 3em;
  }
}

a {
  color: darkslategray;
}

a:hover,
a:focus {
  color: steelblue;
}

h1 {
  font-size: 2.5em;
  font-style: italic;
  font-weight: 200;
  text-indent: -0.375em;
}

@media screen and (width >= 480px) {
  h1 {
    font-size: 4em;
  }
}

p {
  max-width: 45em;
}

.btn {
  background-color: darkgray;
  border-radius: 0.33em;
  box-sizing: border-box;
  color: white;
  cursor: pointer;
  display: inline-block;
  font-family: sans-serif;
  font-size: 13px;
  font-weight: 500;
  height: 2em;
  line-height: 2em;
  margin: 0 0.5em 0.5em 0;
  padding: 0 0.75em 0 0.7em;
  position: relative;
  text-decoration: none;
  vertical-align: top;
}

.btn:hover,
.btn:focus,
.btn:active {
  background-color: dimgray;
  color: white;
}

.btn__icon {
  background: rgb(0 0 0 / 0%) 0 0 no-repeat;
  display: inline-block;
  height: 1.33em;
  position: relative;
  top: 0.33em;
  width: 1.33em;
}

.btn__label {
  display: inline-block;
  margin-left: 0.33em;
  vertical-align: top;
  white-space: nowrap;
}

.btn--twitter {
  background-color: #1b95e0;
}

.btn--twitter:hover,
.btn--twitter:focus,
.btn--twitter:active {
  background-color: #0c7abf;
}

.btn--twitter .btn__icon {
  background-image: url('data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2072%2072%22%3E%3Cpath%20fill%3D%22none%22%20d%3D%22M0%200h72v72H0z%22%2F%3E%3Cpath%20class%3D%22icon%22%20fill%3D%22%23fff%22%20d%3D%22M68.812%2015.14c-2.348%201.04-4.87%201.744-7.52%202.06%202.704-1.62%204.78-4.186%205.757-7.243-2.53%201.5-5.33%202.592-8.314%203.176C56.35%2010.59%2052.948%209%2049.182%209c-7.23%200-13.092%205.86-13.092%2013.093%200%201.026.118%202.02.338%202.98C25.543%2024.527%2015.9%2019.318%209.44%2011.396c-1.125%201.936-1.77%204.184-1.77%206.58%200%204.543%202.312%208.552%205.824%2010.9-2.146-.07-4.165-.658-5.93-1.64-.002.056-.002.11-.002.163%200%206.345%204.513%2011.638%2010.504%2012.84-1.1.298-2.256.457-3.45.457-.845%200-1.666-.078-2.464-.23%201.667%205.2%206.5%208.985%2012.23%209.09-4.482%203.51-10.13%205.605-16.26%205.605-1.055%200-2.096-.06-3.122-.184%205.794%203.717%2012.676%205.882%2020.067%205.882%2024.083%200%2037.25-19.95%2037.25-37.25%200-.565-.013-1.133-.038-1.693%202.558-1.847%204.778-4.15%206.532-6.774z%22%2F%3E%3C%2Fsvg%3E');
}

.btn--facebook {
  background-color: #4267b2;
}

.btn--facebook:hover,
.btn--facebook:focus,
.btn--facebook:active {
  background-color: #365899;
}

.btn--facebook .btn__icon {
  background-image: url('data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2016%2016%22%20class%3D%22icon%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20fill-rule%3D%22evenodd%22%20d%3D%22M8%2014H3.667C2.733%2013.9%202%2013.167%202%2012.233V3.667A1.65%201.65%200%200%201%203.667%202h8.666A1.65%201.65%200%200%201%2014%203.667v8.566c0%20.934-.733%201.667-1.667%201.767H10v-3.967h1.3l.7-2.066h-2V6.933c0-.466.167-.9.867-.9H12v-1.8c.033%200-.933-.266-1.533-.266-1.267%200-2.434.7-2.467%202.133v1.867H6v2.066h2V14z%22%3E%3C%2Fpath%3E%3C%2Fsvg%3E');
}