contact.css

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

body {
  align-items: center;
  margin: auto;
  width: 490px;
  height: 495px;
  padding-top: 5%;
}
#box {
  background: linear-gradient(
    277deg,
    #7c3ef9,
    #843cc4,
    #8d3b8f,
    #953959,
    #9e3724
  );
  width: 481px;
  padding-left: 10px;
  position: absolute;
  font-family: "Noto Sans", sans-serif;
  background-size: 1000% 1000%;
  color: white;
  border-top-right-radius: 20px;
  border-top-left-radius: 20px;

  -webkit-animation: AnimationName 10s ease infinite;
  -moz-animation: AnimationName 10s ease infinite;
  animation: AnimationName 10s ease infinite;
}

@-webkit-keyframes AnimationName {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}
@-moz-keyframes AnimationName {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}
@keyframes AnimationName {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

form {
  padding-top: 80px;
  background-color: black;
  padding-left: 10px;
  padding-bottom: 30px;
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
  border-top-right-radius: 30px;
  border-top-left-radius: 30px;
  width: 481px;

  -webkit-animation: AnimationNameTwo 10s ease infinite;
  -moz-animation: AnimationNameTwo 10s ease infinite;
  animation: AnimationNameTwo 10s ease infinite;
}

#sub-button {
  height: 60px;
  width: 60px;
  border-radius: 40px;
  font-family: "Noto Sans", sans-serif;
  color: white;
  font-size: 15px;
  background: linear-gradient(
    277deg,
    #7c3ef9,
    #843cc4,
    #8d3b8f,
    #953959,
    #9e3724
  );
  margin-left: 43%;
}

#message {
  display: flex;
}