@import url('https://fonts.googleapis.com/css2?family=Lemon+Tuesday&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Open Sans', sans-serif;
  background: url('../imagens/fundo-nuvens.png') no-repeat center center fixed;
  background-size: cover;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Cabeçalho */
header {
  background-color: #4a90e2;
  padding: 10px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.container-header {
  max-width: 1200px;
  margin: 0 auto;
}

.nav-menu {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Menus */
.menu-esquerda,
.menu-direita {
  display: flex;
  list-style: none;
}

.menu-esquerda li,
.menu-direita li {
  margin: 0 10px;
}

.menu-esquerda a,
.menu-direita a {
  color: white;
  text-decoration: none;
  font-size: 18px;
}

.menu-esquerda a:hover,
.menu-direita a:hover {
  text-decoration: underline;
}

/* Conteúdo principal */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0px;
}

.apresentacao {
  text-align: center;
}

.nuvem {
  
  margin: 0px auto;
  max-width: 100%;
  height: auto;
}

.btn {
  display: block;
  margin: 0px auto;
  padding: 10px 20px;
  background-color: #5dade2;
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 18px;
  cursor: pointer;
}

.btn:hover {
  background-color: #357ABD;
}

/* Rodapé */
footer {
  text-align: center;
  padding: 10px;
  background: rgba(255, 255, 255, 0.8);
  font-size: 14px;
}