html, body {
  margin: 0;
  padding: 0;
}

body {
  background-color: #fff;
  color:#000;
  font-size: 22px;
}

.card-text {
  font-size: 18px;
}

header {
  padding:10px;
  background: url(img/bg.png);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

footer {
  margin-top: 20px;
  padding:10px;
  background: url(img/bg.png);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  color: #fff;
  font-size: 15px;
}

footer p {
  margin: 0px;
}

.sponsors img {
  padding: 10px;
}

.twitter {
  max-width: 25px;
  margin-left: 3px;
}

.card {
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  body {
    background-color: #fff;
    color:#000;
    font-size: 26px;
  }

  .card-text {
    font-size: 16px;
  }
}