:root {
	--input-padding-x: .75rem;
	--input-padding-y: .75rem;
}

.form-signin {
	width: 100%;
	max-width: 420px;
	padding: 15px;
	margin: auto;
}

.form-label-group {
	position: relative;
	margin-bottom: 1rem;
}

.form-label-group > input,
.form-label-group > label {
	padding: var(--input-padding-y) var(--input-padding-x);
}

.form-label-group > label {
	position: absolute;
	top: 0;
	left: 0;
	display: block;
	width: 100%;
	margin-bottom: 0; /* Override default `<label>` margin */
	line-height: 1.5;
	color: #495057;
	cursor: text; /* Match the input under the label */
	border: 1px solid transparent;
	border-radius: .25rem;
	transition: all .1s ease-in-out;
}

.form-label-group input::-webkit-input-placeholder {
	color: transparent;
}

.form-label-group input:-ms-input-placeholder {
	color: transparent;
}

.form-label-group input::-ms-input-placeholder {
	color: transparent;
}

.form-label-group input::-moz-placeholder {
	color: transparent;
}

.form-label-group input::placeholder {
	color: transparent;
}

.form-label-group input:not(:placeholder-shown) {
	padding-top: calc(var(--input-padding-y) + var(--input-padding-y) * (2 / 3));
	padding-bottom: calc(var(--input-padding-y) / 3);
}

.form-label-group input:not(:placeholder-shown) ~ label {
	padding-top: calc(var(--input-padding-y) / 3);
	padding-bottom: calc(var(--input-padding-y) / 3);
	font-size: 12px;
	color: #777;
}

/* Fallback for Edge
-------------------------------------------------- */
@supports (-ms-ime-align: auto) {
	.form-label-group > label {
		display: none;
	}
	.form-label-group input::-ms-input-placeholder {
		color: #777;
	}
}

/* Fallback for IE
-------------------------------------------------- */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
	.form-label-group > label {
		display: none;
	}
	.form-label-group input:-ms-input-placeholder {
		color: #777;
	}
}