body {
  text-align: center;
}

button {
  background-color: rgba(0, 0, 0, 0);
  outline: none;
}

h2 {
  margin-bottom: 10px;
}

.btn {
  margin-bottom: 10px;
  margin-left: auto;
  margin-right: auto;
  display: block;
}

input {
  width: 100%;
  padding: 5px 14px;
  border: 2px solid #201f1d;
  margin-bottom: 10px;
  background-color: rgba(0, 0, 0, 0.4);
  outline: none;
  color: #fff;
  font-size: 14px;
}

input:focus {
  border: 2px solid rgba(0, 0, 0, 0.4);
  background-color: rgb(60, 60, 60);
}

form {
  background-color: #fff;
  padding: 20px;
  color: #000;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.4);
}

form p {
  margin-bottom: 5px;
}

form p:nth-child(1) {
  margin-top: 0;
}

.panel {
  margin-top: 20px;
  float: none;
}

@media (min-width: 768px) {
  .panel {
    width: 50%;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 1024px) {
  .panel {
    width: 30%;
    margin-left: auto;
    margin-right: auto;
  }
}