.body-signin {
  display: flex;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: center;
  justify-content: center;
  padding-top: 40px;
  padding-bottom: 40px;
  text-align: center;  
}

.form-signin {
  width: 100%;
  max-width: 500px;
  padding: 15px;
  margin: 0 auto;
}

.container {
  max-width: 960px;
}

.main-header {
  max-width: 700px;
}

.card-deck .card {
  min-width: 220px;
}

.card .card-header {
    font-weight: bold;
}

.card-body .card-title {
    font-weight: bold;
}

.border-top { border-top: 1px solid #e5e5e5; }
.border-bottom { border-bottom: 1px solid #e5e5e5; }

.box-shadow { box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05); }