* {
  margin: 0;
  padding: 0;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  box-sizing: border-box;
}

body {
  width: 100vw;
  text-align: center;
}
.cabecalho {
  background-color: rebeccapurple;
  color: white;
  padding: 30px;
  font-size: 14px;
}

.cabecalho ul {
  display: inline-block;
  margin-left: 100px;
}

img {
  width: 25vh;
}
.imagens {
  display: inline-block;
  margin-top: 30px;
  margin-left: 100px;
}
button {
  margin: 10px 20px;
}
h2 {
  font-size: 14px;
}
footer {
  background-color: rebeccapurple;
  width: 100vw;
  padding: 20px;
  margin-top: 100px;
}
#rodape {
  display: inline-block;
  padding: 10px;
  width: 100vw;
  text-align: left;
}
h3 {
  padding: 0 0 20px 0;
  font-size: 14px;
}
button {
  margin-top: 20px;
}