main.css

html,
body {
  height: 100%;
}

body {
  font: 16px/1.25 'Courier New', Courier, monospace;
}

* {
  box-sizing: border-box;
}

#page {
  height: 100%;
  width: 100%;
  padding: 0 20px;
}

#content {
  height: 100%;
  padding: 39px 0 83px;
}

#content > div {
  height: 100%;
  overflow: hidden;
}

footer {
  width: 100%;
  height: 83px;
  padding: 5px 10px;
  position: absolute;
  bottom: 0;
  left: 0;
}

header {
  width: 100%;
  height: 39px;
  padding: 5px 0 0;
  text-align: center;
  position: absolute;
  top: 0;
  left: 0;
}

footer .btn {
  float: left;
}

footer .clearfix {
  margin: 0 0 10px;
}

footer input.form-control {
  width: 70px;
  margin: 0 auto;
}

#fake {
  position: absolute;
  top: -9999px;
}

.custom-file {
  position: relative;
  overflow: hidden;
  display: inline-block;
}
.custom-file input {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  font-size: 200px;
}
.custom-file .btn {
  background: #bdc3c7;
  color: #fff;
}

#pagination {
  display: block;
  overflow: hidden;
  text-align: center;
}