@import url('https://fonts.googleapis.com/css2?family=Open+Sans&display=swap');

*{
  box-sizing: border-box;
}
body{
  background-color: #f9fafb;
  font-family: 'Open Sans',sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  min-height: 100vh;
}
.container{
  width: 400px;
  background-color: #fff;
  border-radius: 5px;
  box-shadow:0 2px 10px rgba(0,0,0,0.3);
}
h2{
  text-align: center;
  margin: 0 0 20px;
}
.form{
  padding: 30px 40px;
}
.form-control{
  margin-bottom: 10px;
  padding-bottom: 20px;
  position: relative;
}

.form-control label{
  display: block;
  margin-bottom: 5px;
  color:#777;
}
.form-control input{
  display: block;
  border: 2px solid #f0f0f0;
  border-radius: 4px;
  width: 100%;
  padding: 10px;
  font-size: 14px;
}
.form-control input:focus{
  outline: 0;
  border-color: #777;
}

.form-control.success input{
  border-color: #2ecc71 ;
}
.form-control.error input{
  border-color: #e74c37;
}
.form-control small{
  color:#e74c37;
  visibility: hidden;
  position: absolute;
  left: 0;
  bottom: 0;
}
.form-control.error small{
  visibility: visible;
}
button{
  width: 100%;
  display: block;
  font-size: 16px;
  background-color: #3498bc;
  cursor: pointer;
  border: 2px solid #3498bc;
  margin-top: 20px;
  padding: 10px;
  border-radius: 4px;
  color:#fff;
}