body, html {
        position: relative;
        display: block;
        background-color: black;
        width: 100%;
        min-height: 100vh;
        border: 0;
        padding: 0;
        margin: 0;
        overflow: hidden;
      }

      button {
        background-color: transparent;
        border: 1px solid blue;
        -webkit-border-radius: 3px;
        border-radius: 3px;
        vertical-align: middle;
        margin: 2px 2px 2px 0;
        min-width: 19px;
        height: 22px;
        padding: 1px;
      }

      label {
        vertical-align: middle;
        height: 22px;
        margin: 2px 0 2px 0;
      }

      input[type=color] {
        border: 1px solid whitesmoke;
        margin: 2px 3px 2px -2px;
        vertical-align: middle;
        background: none;
        height: 20px;
        width: 16px;
        padding: 0;
      }

      input[type=file] {
        vertical-align: middle;
        margin: 2px 0 2px 0;
        max-width: 160px;
      }

      input[type=range] {
        vertical-align: middle;
        margin: 2px 0 2px 0;
        min-width: 30px;
      }

      input[type=text] {
        vertical-align: middle;
        margin: 2px 2px 2px 0;
      }

      .dropdown {
        background-color: transparent;
        vertical-align: middle;
        display: inline-block;
        position: relative;
        min-width: 40px;
        font-size: 85%;
        color: blue;
        border: none;
        padding: 1px;
      }

      .dropdown-content {
        background-color: #FFFAD5;
        border: 1px solid #DEAF64;
        -webkit-border-radius: 3px;
        border-radius: 3px;
        position: absolute;
        margin-top: 2px;
        z-index: 10;
      }

      select {
        vertical-align: middle;
        border: 1px solid blue;
        -webkit-border-radius: 3px;
        border-radius: 3px;
        background: none;
        min-width: 72px;
        height: 22px;
        color: blue;
      }

      .error_msg {
        background-color: transparent;
        position: absolute;
        text-align: center;
        font-size: x-large;
        display: none;
        color: red;
        width: 240px;
        height: 240px;
        top: 50%;
        left: 50%;
        margin-left: -127px;
        padding: 10px;
        border: none;
      }

      .loading_msg {
        background-color: transparent;
        color: greenyellow;
        position: absolute;
        text-align: center;
        font-size: large;
        height: 240px;
        width: 240px;
        top: 50%;
        left: 50%;
        margin-left: -127px;
        padding: 10px;
        border: none;
      }

      #gui_position {
        position: absolute;
        display: none;
        border: 1px solid navy;
        -webkit-border-radius: 2px;
        border-radius: 2px;
        min-height: 22px;
        margin-left: 2px;
      }

      .fm {
        color: navy;
        width: 99.1%;
        border: 1px solid navy;
        -webkit-border-radius: 2px;
        border-radius: 2px;
        padding: 4px;
        margin: 1px;
      }

      .fixed-menu {
        background-color: whitesmoke;
        display: inline-block;
        position: fixed;
        z-index: 1;
        margin: 0px;
        padding: 1px;
        width: 100%;
      }