comment.css

body{
  margin:0;
  padding: 0;
  font-family: "Nunito", sans-serif;
  /* background: #2ecc71; */
  background: rgba(231, 76, 60,1.0);
}

.box{
  width: 400px;
  padding: 40px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  background: #191919;
  text-align: center;
}
.box h1{
  color: white;
  text-transform: uppercase;
  font-weight: 500;
}
.box input[type="text"],.box input[type="email"]{
  border: 0;
  background: none;
  display: block;
  margin: 20px auto;
  text-align: center;
  border: 2px solid #3498db;
  padding: 14px 10px;
  width: 200px;
  outline: none;
  color: white;
  border-radius: 24px;
  transition: 0.25s;
}
.box input[type="text"]:focus,.box input[type="email"]:focus{
  width: 280px;
  border-color: #f1c40f;
}