* {
  box-sizing: border-box;
}

/* Estilo para margem da borda do site */
body {
    font-family: 'Open Sans', sans-serif;
    background-color: #000066;
    color: #333;
    margin: 0;
 }

/* Estilo para o cabeçalho */
header {
  margin-top: 60px;
  background-color: #1a1a1a;
  color: #fff;
  padding: 0px;
}

h1 {
  text-align: center;
  color: #000066;
  padding: 10px;

}

h2 {
  text-align: center;
  color: #ffcc00;
  padding: 20px;

}

h3 {
  text-align: center;
  color: #000066;
  padding: 20px;

}

/* Estilo para a barra de menu */
nav {
    background-color: #1a1a1a;
    display: flex;
    justify-content: left;
    align-items: center;
    position: fixed;
    top: 0%;
    width: 100%;
  }
  
  .menu {
    display: flex;
    list-style: none;
    margin: 0px;
    padding: 0px;
  }
  
  .menu li {
    margin-right: 0px;
  }
  
  .menu li:last-child {
    margin-right: 0px;
  }
  
  .menu a {
    background-color: #1a1a1a;
    text-decoration: none;
    color: #fff;
    display: block;
    padding: 20px;
  }

  .menu a:hover {
    background-color: #333;
    text-decoration: none;
    color: #ffcc00;
    display: block;
    padding: 20px;
  }

/* capa do site*/
.capa {
  background: url(imgs/img_capa.png) no-repeat center; 
  background-size: cover;
  height: 400px; 
}


/* Estilo para o coluna central */
.coluna {
  float: left;
  width: 33.33%;
  background-color: #CCC;
  padding: 15px;
}

.linha::after {
  content: "";
  display: table;
  clear: both;
}

/* Conteudo texto */
.conteudo_txt {
  background-color: #ccc;
  color: #333;
  width: 100%;
  text-align: left;
  padding: 10px 20px;
   
}

/* Link da página */

a.L1:link {color: #333; text-decoration: none;}
a.L1:visited {color: #333; text-decoration: none;}
a.L1:hover {color: #000066; text-decoration: underline;}
a.L1:active {color: #333; text-decoration: none;}

/* Estilo para o rodapé */
footer {
  background-color: #1a1a1a;
  color: white;
  padding: 20px;
  clear: both;
  text-align: center;
}

/* Media queries para tornar o site responsivo */
@media only screen and (max-width: 768px) {
  /* Estilo para o cabeçalho */
  header {
    padding: 0px;
    margin-top: 0px;
  }
 
  /* Estilo para a barra de menu no celular */
  nav {
  position: relative;
  margin-top: 0px;
  }

  /* Estilo para a barra de menu */
  nav li {
    float: none;
    display: inline-block;
    margin-right: 5px;
  }

  .menu {
    flex-direction: column;
    display: flex;
    text-align: center;
    margin-top: 0px;
    padding: 0px;
    width: 100%;
  }

  .menu li {
    margin-right: 0px;
  }

  .menu li {
    margin-right: 0px;
  }

  .icon {
    display: block;
    position: relative;
    top: 0px;
    right: 0px;
  }

  .icon a {
    display: block;
    padding: 0px;
  }

  .capa {
    background: url(imgs/img_capa-01.png); 
    background-size: 100%;
    background-repeat: no-repeat;
    background-color: #000066;
    margin-top: 0px;
  }
  
  h1 {
    font-size: 14px;
 }

  .coluna {
    width: 100%;
 }
  
  footer {
    font-size: 14px;
 }

}