html,
body {
  height: 100%;
  background-repeat: no-repeat;
  background-position: center;
}

body {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

.form-signin {
  width: 100%;
  max-width: 330px;
  padding: 15px;
  margin: auto;
}
.form-signin .checkbox {
  font-weight: 400;
}
.form-signin .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 10px;
  font-size: 16px;
}
.form-signin .form-control:focus {
  z-index: 2;
}

.mm-sp-bottom {
	margin-bottom: 10px;
}

.form-signin input[type="username"] {
  margin-bottom: 5px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.form-signin input[type="password"] {
  margin-bottom: 10px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.mm-unknown img {
  opacity: .5;
  -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
  filter: grayscale(100%);
  transform: scale(.97);
}

.mm-unknown img:hover {
  opacity: .7;
  -webkit-filter: grayscale(0%); /* Safari 6.0 - 9.0 */
  filter: grayscale(0%);
  transform: scale(1) rotate(2deg);
  box-shadow: 0 0 7px rgba(0, 0, 0, .5);
}

.mm-known img {
  opacity: 1;
  -webkit-filter: grayscale(0%); /* Safari 6.0 - 9.0 */
  filter: grayscale(0%);
  transform: scale(1);
  box-shadow: 0 0 7px rgba(0, 0, 0, .5);
}