body {
  width: 100%;
}

ul {
  background-color: #333;
  color: #ffffff;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  padding-left: 0px;
  margin: 0;
}

li {
  padding: 15px;
  display: inline-block;
}

li:hover {
  background-color: #60d394;
  color: #000000;
  cursor: pointer;
}

.content-img {
  width: 200px;
  margin: 30px;
}

.content-center {
  width: 100%;
  margin: auto;
}

.content-center h3,
.content-center h4 {
  margin: 30px;
  width: 100%;
  max-width: 300px;
}

.content-center h3 {
  font-family: arial;
  font-size: 1.2em;
  color: #f06543;
}

.content-center h4 {
  font-family: arial;
  font-size: 1em;
  color: #000000;
}

.content-center h4 i {
  margin: 10px;
}

.conteiner-textarea {
  width: 50%;
  border: dashed 2px;
  border-color: gray;
}

.btn-submit {
  width: 180px;
  background-color: #1e90ff;
  border-color: #1e90ff;
  border-radius: 15px;
  color: #fff;
  font-size: 16px;
  padding: 10px;
}

.result-msg {
  width: 50%;
  font-size: 16px;
  font-family: Arial, Helvetica, sans-serif;
}