/* Body Styles */
body {
  font-family: 'Noto Serif TC', serif;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: #c7b9ab;    background-image: url("img/toc_banner.png");  background-repeat: no-repeat;  background-position: center center;  background-size: cover;
}

/* Header Styles */
header {
  background-color: #2c3e50;
  height: 60px;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 1000px;
  margin: 0 auto;
}

nav li {
  float: left;
  margin-right: 20px;
}

nav li a {
	color: #c6955d;    display: block;    line-height: 60px;    padding: 0 10px;    text-decoration: none;    text-shadow: 1px 1px 1px rgba(0,0,0,0.5);
}

nav li a:hover {
  background-color: #34495e;
}

/* Main Content Styles */
main {
  padding: 50px 50px;
  text-align: center;
  max-width: 1000px;
  margin: auto;
  flex: 1 0 auto; /* this is the key to the sticky footer */
  background: #b9b5aeed;
}.big-background-container {	}

h1 {
  font-size: 3em;
  margin-bottom: 10px;
}

h2 {
  font-size: 2em;
  margin-bottom: 50px;
}

p {
  font-size: 1em;
  margin-bottom: 50px;
}

button {/*
  background-color: #e74c3c;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1.5em;
  padding: 10px 20px;*/
}

button:hover {/*
  background-color: #c0392b;*/
}

/* Footer Styles */
footer {
  background-color: #2c3e50;
  color: #fff;
  height: 60px;
  text-align: center;
  padding: 20px;
}footer p { font-size: 1em; color: #959191; } 

.invalid { border: 1px solid red; }.error-message {}#register-form { /*position: relative;*/ }#register-form div { /*position: relative; width: 50%; margin: 0% auto; */}#register-form div label { /*width: 100%; display: block;*/ }#register-form div input { /*height: 2em; width: 100%;*/ }.invalid-feedback {    margin-bottom: 1em;color: #7a0000; }

@media (max-width: 600px) {
  /* Main Content Styles for Mobile */
  main {
    padding: 50px;
  }
  
  h1 {
    font-size: 2.5em;
  }

  h2 {
    font-size: 1.8em;
    margin-bottom: 30px;
  }

  p {
    font-size: 1.2em;
    margin-bottom: 30px;
  }

  button {
    font-size: 1.2em;
    padding: 10px 15px;
  }

  nav ul {
    max-width: 100%;
    padding: 0 20px;
  }
}