* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-family: "Lucida Sans", "Lucida Sans Regular", "Lucida Grande",
    "Lucida Sans Unicode", Geneva, Verdana, sans-serif;
}
body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  background-color: rgb(82, 83, 84);
}

.container {
  display: inline-block;
  position: relative;
  box-shadow: -10px -16px #023e8a;
}

.container h1 {
  position: absolute;
  top: 240px;
  right: 700px;
  font-size: 100px;
  color: #ffffff;
  margin-left: 55px;
}

h3 {
  text-align: left;
}

#conteiner {
  width: 1000px;
  height: 300px;
  color: aliceblue;
}

#centralizar {
  display: flex;
  position: absolute;
  top: 950px;
  font-size: 100px;
  margin-left: -10px;
  flex-wrap: wrap;
  width: 83%;
}

strong {
  color: #77c9df;
  font-family: "letra segundaria";
  font-size: 25px;
  font-style: italic;
}

header {
  width: 100%;
  height: 70px;
  background-color: #023e8a;
  padding: 0px;
  display: flex;
  flex-wrap: flex;
  justify-content: space-between;
  z-index: 99;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 10px;
}

.menu {
  align-items: center;
  display: flex;
  list-style-type: none;
}

.menu li a {
  color: white;
  display: block;
  padding: 10px 20px 10px 20px;
  text-decoration: none;
}

#chat a {
  display: block;
  padding: 25px 40px 25px 40px;
  height: 70px;
  width: 100px;
  background-color: black;
  text-decoration: none;
}
body > div > div > img {
  z-index: -1;
}
body > div > div > div:nth-child(2) > img {
  z-index: 0;
}

body > header > ul{
  z-index: 99;
}

body > header > div > a{
  z-index: 99;
}