body {
    margin: 0;
    font-family: 'Noto Sans JP', sans-serif;
    background: #FF7F00;
  }
  
  .nav {
    margin: 0;
    padding: 0;
    width: 200px;
    background-color: #A01300;
    position: fixed;
    height: 100%;
    overflow: auto;
  }
  
  .nav a {
    display: block;
    color: #FFF;
    padding: 16px;
    text-decoration: none;
  }
   
  .nav a.active {
    background-color: #4CAF50;
    color: white;
  }
  
  .nav a:hover:not(.active) {
    background-color: #555;
    color: white;
  }
  
main {
    margin-left: 200px;
    padding: 1px 16px;
    height: 1000px;
  }
  
  @media screen and (max-width: 700px) {
    .nav {
      width: 100%;
      height: auto;
      position: relative;
    }
    .nav a {float: left;}
    main {margin-left: 0;}
  }
  
  @media screen and (max-width: 400px) {
    .sidebar a {
      text-align: center;
      float: none;
    }
  }

  .container {
      margin-bottom: 40px;
  }

.song {
    background: #F84828;
    color: white;
    padding: 10px;
    font-size: 14pt;
    margin: 10px 0;
}

.song p {
    margin: 0;
}

.song-link {
    text-decoration: none;
}

.song-form {
    background: #ff5333;
    color: #FFF;
    padding: 20px;
}

.form-field {
    background: #555555;
    padding: 15px 20px 20px 20px;
    margin-bottom: 20px;
}

.form-field p {
    margin: 0;
    font-size: 18pt;
}

 .form-field > label {
    display: block;
}

.form-field input {
    margin: 5px 0;
}

.form-field input[type="text"] {
    width: 300px;
}

.form-field input[type="number"] {
    width: 50px;
}

h1 small {
    color: #4a4a4a;
}

.form-field-indent {
    margin-left: 20px;
}

.checkbox {
    display: inline-block;
}

.checkbox input {
    margin-right: 3px;
    margin-left: 5px;
}