css.css

body {
  margin: 0;
  padding: 0;
  width: 100%;
  background-color: #f2f2f2;
}

label {
  margin-left: 1%;
}

a {
  text-decoration: none;
}

.wrapper {
  margin: 0 3%;
}

.container-fluid {
  margin: 0;
  padding: 0;
}

.forms, .tel, .mails {
  padding: 2%;
}

/* Form validation */
input.valid {
  border: solid 1px green;
}

input.invalid {
  border: solid 1px green;
}

input + p {
  font-size: 9em;
  font-weight: bold;
  text-align: center;
  margin: 0 10;
  color: orange;
  opacity: 0;
  height: 0;
}

input.invalid + p {
  opacity: 1;
  height: auto;
  margin-bottom: 20px;
}

/*** Navbar****/
.active {
  background-color: orange;
}

.navbar {
  width: 100%;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

li {
  float: left;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover {
  background-color: #111;
}