body {
  right: 10%;
  font-family: Arial, Helvetica, sans-serif;
  background-image: linear-gradient(45deg, blue, cyan, yellow);
}

.form-sigin {
  width: 100%;
  margin: auto;
  padding-top: 50%;
}

.card {
  background-color: rgba(0, 0, 0, 0.6);
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  left: 50%;
  border-radius: 15px;
  padding: 80px;
  color: white;
}

.card-group {
  margin-bottom: 20px;
  position: center;
}

.card-top {
  text-align: center;
}

.card-group > input {
  width: 100%;
  height: 10px;
  border: none;
  padding: 8px;
  font-size: 15px;
  outline: none;
}

.card-group > button {
  background-color: blue;
  padding: 15px;
  border: none;
  border-radius: 10px;
  width: 100%;
  font-size: 15px;
  color: cornsilk;
  cursor: pointer;
  outline: 0;
  margin-left: 5%;
}
button:hover {
  background-color: darkblue;
}
.imgLogin {
  width: 100px;
}