* {
    margin: 0;
    padding: 0;
    border: 0;
}

body, html {
    height: 100%;
}

header {
    background-color: white;
    padding-left: 50px;
    width: 100%;
    height: 140px;
    margin-top: 20px;
    overflow: hidden;
}

.topheader {
    float: left;
    width: 100%;
    overflow: hidden;
    display: block;
}

#imgAngola {
    float: right;
    padding-right: 50px;
    vertical-align: center;
    margin-top: 30px;
}

#logo {
    padding-left: 30px;
    position: fixed;
    overflow: hidden;
}

/* background images */
.imagem1 {
    background-image: url("imagens/background/background1.jpg");
}

.imagem2 {
    background-image: url("imagens/background/background2.jpg");
}

.imagem1, .imagem2 {
    position: relative;
    opacity: 0.7;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: auto;
}
/* end background images*/

/* menu nav-bar */
ul.topnav {
  list-style-type: none;
  width: 100%;
  margin: 0;
  padding: 0;
  padding-left: 50px;
  overflow: hidden;
  background-color: #ec3237;
  z-index: 1;
}

ul.topnav li {float: left;}

.active {
    background-color: #5a5a5a;
}

ul.topnav li a {
  display: inline-block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  transition: 0.3s;
  font-size: 17px;
}

ul.topnav li a:hover {
    background-color: #5a5a5a;
}

ul.topnav li.icon {display: none;}

@media screen and (max-width:650px) {
  ul.topnav li:not(:first-child) {display: none;}
  ul.topnav li.icon {
    float: right;
    display: inline-block;
  }
}

@media screen and (max-width:650px) {
  ul.topnav.responsive {position: relative;}
  ul.topnav.responsive li.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  ul.topnav.responsive li {
    float: none;
    display: inline;
  }
  ul.topnav.responsive li a {
    display: block;
    text-align: left;
  }
}
/* end menu nav-bar */

/* css introducao */
.introducao {
    width: 100%;
    padding:50px;
    padding-left: 30%;
    padding-right: 30%;
    padding-top: 5%;
    color: white;
    letter-spacing: 3px;
    text-shadow: black 0.1em 0.1em 0.2em;
    text-align: justify;
    font-size: 18px;
}

#tituloIntroducao {
    text-align: center;
    padding-bottom: 50px;
    font-size: 25px;
    letter-spacing: 3px;
}
/* end css introducao */

/* css produtos*/
.produtos {
    position: relative;
    width: 100%;
    padding:50px;
    padding-top: 5%;
    padding-bottom: 5%;
    background-color: #f0f0f0;
    color: #5a5a5a;
    letter-spacing: 3px;
    text-align: justify;
}

#tituloProdutos {
    text-align: center;
    padding-bottom: 50px;
    font-size: 25px;
    letter-spacing: 3px;
}
/* end css produtos */

/* css servicos*/ 
.nossosServicos {
    width: 100%;
    padding:50px;
    padding-top: 5%;
    padding-left: 30%;
    padding-right: 30%;
    color: white;
    letter-spacing: 3px;
    text-shadow: black 0.1em 0.1em 0.2em;
    text-align: justify;
    font-size: 20px;
}

#tituloServicos {
    text-align: center;
    padding-bottom: 50px;
    font-size: 25px;
    letter-spacing: 3px;
}
/* end css servicos*/

/* css contato*/
.contato {
    position: absolute;
    width: 100%;
    padding:50px;
    padding-top: 5%;
    background-color: #f0f0f0;
    color: #5a5a5a;
    letter-spacing: 2px;
    text-align: justify;
    text-decoration: none;
    font-size: 18px;
}

#tituloContato {
    text-align: center;
    padding-bottom: 50px;
    font-size: 25px;
    letter-spacing: 3px;
}
/* end css contatos*/