app.css

body {
  font-family: 'Lato', sans-serif;
  font-size: 16px;
  background-color: #efefef;
}

.main {
  padding: 20px;
  margin: 10px auto;
  max-width: 800px;
  background-color: white;
  -webkit-box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.2);
  -moz-box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.2);
  box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.2);
}

.notice {
  display: none;
  color: red;
  font-weight: bold;
}

h1 {
  font-size: 24px;
  margin-top: 0;
}

h2 {
  font-size: 16px;
}

.response {
  background-color: #cdcdcd;
  padding: 15px;
  overflow: auto;
  word-wrap: break-word;
}

button, .button {
  font-family: 'Lato', sans-serif;
  padding: 10px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  border: 1px solid #ededed;
  background-color: #ededed;
  cursor: pointer;
}

.providers {
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

button div.text, .button div.text {
  white-space: nowrap;
}

.providers button {
  background: transparent;
  height: 32px;
  padding: 3px;
  display: -webkit-flex;
  display: flex;
  margin-right: 10px;
  margin-bottom: 10px;
  -webkit-align-items: center;
  align-items: center;
}

.providers button div {
  display: inline-block;
  flex: auto;
  align-self: center;
}

.providers div.logo {
  height: 26px;
  width: 26px;
}

.providers div.text {
  padding: 0 10px;
}

.logout {
  margin-top: 20px;
}

button#facebook {
  background: #4c69ba;
  background: linear-gradient(#4c69ba, #3b55a0);
  color: white;
  border: none;
}

button#facebook div.logo {
  background-image: url("images/icons/f.svg");
  height: 26px;
  width: 26px;
}

button#google div.logo {
  background: url("images/icons/g.svg");
  height: 22px;
  width: 22px;
  margin-left: 2px;
}

button#microsoft div.logo {
  background: url("images/icons/ms.png");
  background-size: 22px 22px;
  height: 22px;
  width: 22px;
  margin-left: 2px;
}

button#test {
  margin-bottom: 5px;
}

a {
  color: #454545;
}