:root {
	--color-negro: #101820; /* black */
	--color-877: #8A8D8F; /*gris*/
	--color-ocre: #A39382; /* ocre */
	--color-7534: #D1CCBD; /* ocre claro */
}
html, body{display: flex;flex-direction:column;align-items:center;justify-content:center;height:100%;}
body {padding-top:20px; padding-bottom:20px;}

.btn{background-color: var(--color-negro); color:#fff;}
.form-signin {
  max-width: 350px;
  padding: 15px;
  margin: 0 auto;
}
.form-signin .form-signin-heading,
.form-signin .checkbox {
  margin-bottom: 10px;
}
.form-signin .checkbox {
  font-weight: 400;
}
.form-signin .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 10px;
  font-size: 16px;
	margin-bottom: 8px;
}
.form-signin .form-control:focus {
  z-index: 2;
}
.form-signin input[type="email"] {
  margin-bottom: -1px;
  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;
}