1
I’m having trouble putting the caption inside my image, I want the caption to be at the bottom of the image (inside it), another thing is that my Section.gallery is not inside my div#interface and I can’t center it either.
@charset "UTF-8";
.postagem {
	background-color: rgba(255,140,40,.05);
	margin: 0px;
}
#interface {
	width: 1200px;
	background-color: white;
	margin: 90px auto 10px auto;
	box-shadow: 0px 4px 6px 3px rgba(0,0,0,.1);
}
.cabecalho {
	transition: 0.2s;
	top: 0px;
	position: fixed;
	width: 100%;
	height: 35px;
	background-color: rgba(255,140,40,1);
	margin: 0px;
	padding-bottom: 20px;
	padding-top: 20px;
	text-align: center;
}	
.logo {
	margin: 0px 0px 0px 0px;
	color: rgba(255,255,255,1);
	font-family: agency fb;
	font-size: 20pt;
	/*display: inline-block;*/
}
#fcor {
	color: rgba(255,220,180,1);
}
.galeria {
	margin-left: auto;
	padding: 20px;
	width: 1200px;
	}
.legenda {
	position: absolute;
	text-align: center;
}
.imgp{
	position: relative;
	margin: 10px;
	padding: 0px;
	width: 200px;
	height: 200px;
	background-color: white;
	box-shadow: 1px 1px 3px rgba(0,0,0,.4);
	float: left;
}
/*Postagens*/
#postagem02 {
	background-color: white;
	background: url("../_imagens/win10.jpg") no-repeat;
	background-size: 200px 200px;
}
#postagem03 {
	background-color: white;
	background: url("../_imagens/oracle.png") no-repeat;
	background-size: 200px 200px;
}
#postagem05 {
	background-color: white;
	background: url("../_imagens/vnc.png") no-repeat;
	background-size: 200px 200px;
}
#postagem04 {
	background-color: white;
	background: url("../_imagens/office.jpg") no-repeat;
	background-size: 200px 200px;
}
<!DOCTYPE html>
<html lang="pt-br">
<head>
	<meta charset="UTF-8">
	<title>Processos e Manuais de Instruções</title>
	<link rel="stylesheet" type="text/css" href="_css/estilo.css"/>
	<link rel="stylesheet" type="text/css" href="_css/fotos.css"/>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
	<script>
	$(document).scroll(function() {
	var y = $(this).scrollTop();
	if (y < 25) {
		$('.cabecalho').css({'padding-top': '20px','padding-bottom': '20px'});
	} else {
		$('.cabecalho').css({'padding-top': '5px', 'padding-bottom': '0px'});
	}
	});
	</script>
</head>
<body class="postagem">
		<header class="cabecalho">
			<h1 class="logo">MANUAIS E PROCESSOS<span id="fcor"> INFORMÁTICA<span><h1/>
		</header>
	<div id="interface">
		<section class="galeria">
			<a href="_postagem/1009182.html"><figure><img class="imgp" src="https://image.ibb.co/cXVJ79/check.jpg"><figcaption class="legenda">Legenda Checklist</figcaption></figure></a>
			<a href="_postagem/1009182.html"><figure><img class="imgp" src="https://image.ibb.co/gabEfU/win10.jpg"><figcaption class="legenda">Legenda Windows 10</figcaption><a href="_postagem/1009181.html"></a></figure>
			<a href="_postagem/1009182.html"><figure><img class="imgp" src="https://image.ibb.co/eiiGup/oracle.png"><figcaption class="legenda">Legenda Oracle</figcaption><a href="_postagem/1009182.html"></a></figure>
			<a href="_postagem/1009182.html"><figure><img class="imgp" src="https://image.ibb.co/deNLLU/office.png"><figcaption class="legenda">Legenda Office</figcaption><a href="_postagem/1009182.html"></a></figure>
			<a href="_postagem/1009182.html"><figure><img class="imgp" src="https://image.ibb.co/cRLwup/vnc.png"><figcaption class="legenda">Legenda VNC</figcaption><a href="_postagem/1009182.html"></a></figure>
			
		</section>
	</div>
</body>
</html>