#banner{width:750px;margin:auto}body{margin-left:200px;margin-top:0;margin-right:200px;margin-bottom:0;background-color:#87cefa;align-content:center;font-family:Arial;font-size:20px}conteudo{margin-left:50px;margin-top:10px;margin-right:50px;margin-bottom:10px}# Tudo que for conteudo será centralizado,exceto o que que for parágrafo,que será justificado justificado{width:98%;float:center;margin-right:350px;margin-left:350px;text-align:justify}centralizado{width:98%;float:right;text-align:center}leitura_sugerida{text-align:center}h1{color:#000;text-align:center}h2{color:#000;text-align:center}h3{color:#000;text-align:center}h4{color:#000;text-align:center}p{text-align:justify}

.conteudo {
   display: none;
}

.menu {
  width: 100%;
  max-width: 160px; /* Ajuste este valor conforme necessário */
  height: auto;
  border: 1px solid black;
  font-size:14px
}