html, body {
  margin: 0;
  min-height: 100%;
  display: block;
}

.container {
  background: linear-gradient(90deg, rgba(0,0,0,1) 0%, rgba(255,102,0,1) 100%);
  width: 100%;
  min-height: 100vh;
}

.logo {
  width: 200px;
}

.div_center {
  margin: auto;
  width: 100%;
  max-width: 520px;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px 0;
}

.h1_title {
  margin: 30px 0px 0.35em;
  color: #FF6600;
  font-size: 2.125rem;
  line-height: 1.235;
  font-family: Montserrat, Arial, sans-serif;
  font-weight: 900;
}

.div_logincard {
  margin-top: 50px;
  background-color: white;
  border-radius: 25px;
  padding: 1px;
  transition: all .5s ease;
  overflow: visible;
}

form {
  padding: 15px;
  text-align: left;
}

label {
  font-family: Montserrat, Arial, sans-serif;
  font-weight: bold;
  font-size: large;
}

input {
  color: #FF6600;
  text-align: center;
  width: 100%;
  padding: 12px 20px;
  margin: 8px 0;
  box-sizing: border-box;
  font-size: 20px;
  font-weight: bold;
  border-radius: 25px;
  border: 2px #FF6600 solid;
}

.submit {
  line-height: 1.75;
  letter-spacing: 0.02857em;
  text-transform: uppercase;
  cursor: pointer;
  width: 100%;
  padding: 12px 20px;
  color: white;
  border-radius: 25px;
  background-color: #FF6600;
  box-sizing: border-box;
  margin: 8px auto 0;
  display: block;
  font-size: 18px;
  font-weight: 700;
  font-family: Roboto, Helvetica, Arial, sans-serif;
  box-shadow: rgba(0, 0, 0, 0.2) 0px 3px 1px -2px, rgba(0, 0, 0, 0.14) 0px 2px 2px 0px, rgba(0, 0, 0, 0.12) 0px 1px 5px 0px;
}

.hidden {
  display: none;
}

input:focus {
  outline: 2px solid #FF6600;
  outline-offset: 2px;
}

.submit:focus {
  outline: 2px solid white;
  outline-offset: 2px;
}

.error {
  display: block;
  width: 100%;
  max-width: 450px;
  margin: 12px auto 0;
  padding: 14px 16px;
  background-color: #fdecec;
  border: 1px solid #ff4d4d;
  color: #990000;
  border-radius: 16px;
  font-family: Montserrat, Arial, sans-serif;
  font-weight: 700;
  font-size: 16px;
  text-align: center;
}