body {
  padding-top: 0px;
} 

.btn-primary {
    color: #fff;
    background-color: #284b66;
    border-color: #284b66;
}
.btn-primary:hover {
    color: #fff;
    background-color: #284b66;
    border-color: #284b66;
}

body, html {
  height: 100%;
}

.bg { 
  background-image: url("../bubbles.png");
  height: 100%; 
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}