*, *:before, *:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
}

h1 {
  font-weight: lighter;
  margin: 0 0 30px 0;
  text-align: center;
}

.form-title {
  color: white;
}

form {
  color: white;
  max-width:300px;
  margin: 10px auto;
  padding: 10px 20px;
  background: #2980b9;
  border-radius: 8px;
}

input[type="text"] {
  border: none;
  font-size: 16px;
  height: auto;
  margin: 0;
  outline: 0;
  padding: 15px;
  width: 100%;
  background-color: #ecf0f1;
  color: #2c3e50;
  margin-bottom: 30px;  
}

*, *:before, *:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
}

h1 {
  font-weight: lighter;
  margin: 0 0 30px 0;
  text-align: center;
}

.form-title {
  color: white;
}

/* form */

form {
  color: white;
  max-width:300px;
  margin: 10px auto;
  padding: 10px 20px;
  background: #2980b9;
  border-radius: 5px;
}

/* form controls */

input[type="text"] {
  border: none;
  font-size: 16px;
  height: auto;
  margin: 0;
  outline: 0;
  padding: 15px;
  width: 100%;
  background-color: #ecf0f1;
  color: #2c3e50;
  margin-bottom: 30px;
  border-radius: 5px;
}

button {
  padding: 19px 39px 18px 39px;
  color: white;
  background-color: #1abc9c;
  font-size: 18px;
  text-align: center;
  font-style: normal;
  width: 100%;
  border: 1px solid #3ac162;
  border-width: 1px 1px 3px;
  margin-bottom: 10px;
  border-radius: 5px;
}
Add border radius to form elements.
Add border radius to form elements.
