body {
	display: flex;
    flex-direction: column;
}

.superior {
	display: flex;
    width: 1000px;
}


.nuevo-libro, .administracion-libro {
	width: 500px;
	margin: 0 auto;
	text-align: center;
}

h1 {
	font-size: 2em;
	margin-top: 0;
}

form {
	display: inline-block;
	text-align: left;
	margin-top: 1em;
}

label, input {
	display: block;
	margin-bottom: 0.5em;
}


button {
	margin-top: 0.5em;
	margin-bottom: 3em;
	margin-right: 0.5em;
	padding: 0.5em 1em;
	border-radius: 4px;
	background-color: #4CAF50;
	color: white;
	font-size: 1em;
	border: none;
	cursor: pointer;
}

button:hover {
	background-color: #3e8e41;
}

select {
    font-size: medium;
}

#mi-estado{
    font-size: large;
}

#mi-estado thead th{
    width: 250px;
    border: 1px solid black;
    background-color: rgba(14, 179, 179, 0.437);
}

td{
    text-align: center;
}