* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Open Sans', sans-serif;
  background-color:#88a2bc;
  background-repeat:repeat;
  background-position:left top;
  background-attachment:scroll;
  background-size:auto;
}

html, body {
  height: 100%;
}
body {
  margin: 0;
}
.flex-container {
  height: 100%;
  padding: 0;
  margin: 0;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  align-items: center;
  justify-content: center;
}
.row {
  width: auto;
}
.flex-item {
  padding: 5px;
  color: white;
  text-align: center;
}

.btn {
  position: relative;
  display: block;
  margin: 30px auto;
  padding: 10px;
  overflow: hidden;
  border-width: 0;
  outline: none;
  border-radius: 10px;
  max-width: 200px;
  width: 200px;
  
  background-color: #4f6a8f;
  color: #ecf0f1;
}