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

body { 
  background-image: url("img/cadeado.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}

.main {
  width: 80vw;
  margin: auto;
  display: flex;
  justify-content: center;
}

.titulo {
  padding: 15px;
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  color: white;
  font-size: 35px;
  width: 45vw;  
  margin: auto;
}

.subtitulo {
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  color: blue;
}

.box {
  padding: 15px;
  margin: 10px 10px 10px 10px;
  box-shadow: 4px 4px 2px 3px rgba(44, 44, 44, 0.5); 
  background-color: white;
  border-radius: 0.5em;
  width: 40vw;
  height: auto;
}

.btn {
  border: 0;
  color: white;
  font-weight: 300;
  background-color: rgb(255, 0, 34);
  padding: 15px;
  margin-top: 10px;  
}

.text-input {
  border-radius: 0.5em;
  border: 1px solid rgba(0, 0, 0, 0.2);
  display: block;
  padding: 0.5em;
  width: 100%;
  height: 200px;
}

.footer {
  background-color: rgb(0, 0, 0);
  padding: 40px;
  justify-content: center;
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  color: white;
  width: 100%;
  bottom: 0;
  position: fixed;
}

.nav a.linkAtivo {
  color: white;
}