.form{
    background: radial-gradient(circle, rgba(46,48,68,1) 0%, rgba(20,19,19,1) 100%);
    width:30%;
    overflow: hidden;
    margin: 15% auto;
    box-shadow: 5px 5px 15px 15px #2c3e50; 
    padding: 30px;
    border-radius: 10px;
    position:relative;
    color:white;
    font-weight: bold;
    text-align: center;
}
.form * {
  margin: 3px;
}

.title{
    color: white;
    text-align: center;
}

.btn {
    padding: 5px;
    border-radius: 10px;
}

input {
    border-radius: 5px;
}

.set {
  display: flex;
  margin: 1rem;
  flex-direction: column;
}

.set input {
  padding: 4px;
}

@keyframes shake {
  0% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-8px); }
  80% { transform: translateX(8px); }
  100% { transform: translateX(0); }
}

.shake {
  animation: shake 0.4s;
}