body {
  font-family: 'Montserrat', sans-serif;
  display: flex;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(45deg, #C9FFBF, #F37335 );
  background-size: 200%;
  background-position: 0 0;
  transition: 2s;
  padding: 0 10px;
}

.body_style {
  background-position: 100% 100%;
}


* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}


h1 {
  text-align: center;
  margin-bottom: 50px;
  font-size: 50px;
  font-weight: 600;
  letter-spacing: 5px;
  background: linear-gradient( 125deg, #780206 30% ,transparent , #780206 70% );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 600%;
  background-position: 0 0;
  animation: text 10s linear infinite;
}

@keyframes text {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 100% 100%;
  }
}

.form {
  margin: 0 auto;
  width: 300px;
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 20px;
}

.input {
  width: 100%;
  height: 40px;
  border: none;
  padding: 0 15px;
  border-radius: 5px;
  box-shadow: inset 0 0 5px #666;
  transition: 1s;
  
}
.input:focus {
  outline: none;
}
.btn {
  width: 100px;
  transition: 0.5s;
  background: linear-gradient( 30deg, #fc4a1a , #6be585 );
  background-size: 800%;
  background-position: 100% 100%;
  border: none;
  padding: 10px 0;
  border-radius: 3px;
  cursor: pointer;
  letter-spacing: 2px;
  font-weight: 500;
  color: #fff;
}


.left {
  transform: translate(-100%);
  background-position: 0 0;
  background-size: 1000%;

}
.right {
  transform: translate(100%);
  background-position: 0 0;
  background-size: 1000%;

}

.error {
  box-shadow: inset 0 0 10px red;
  transition: 0.5s;
}

.good {
  box-shadow: inset 0 0 10px green;
  transition: 0.5s;
}