@media only screen and (min-width: 1200px) {
  html,body {
      background-image: url("nature.jpg");
      -webkit-background-size: cover;
      -moz-background-size: cover;
      -o-background-size: cover;
      background-repeat: no-repeat;
      background-size: cover;
  }
  #fieldset {
    position: relative;
    float: left;
    margin-left: 685px;
    margin-top: 30px;
    text-align: center;
    padding: 20px 20px;
    opacity: 0.8;
  }
  
  textarea {
    border-radius: 8px;
    word-wrap: break-word;
    padding-left: 5px;
  }
  textarea:hover {
    border-radius: 8px;
    word-wrap: break-word;
    padding-left: 5px;
    border-color: red;
  }
  textarea:focus {
    border-radius: 8px;
    word-wrap: break-word;
    padding-left: 5px;
    border-color: red;
    outline: none;
  }
  #copybtn {
    border: none;
    padding: 0;
    background: none;
  }
  .btntooltip {
    position: absolute;
    display:inline-block;
    margin: 0px 20px 10px 480px;
  }
  .btntooltip .tooltip {
    visibility: hidden;
    width: 140px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 150%;
    left: 50%;
    margin-left: -70px;
    opacity: 0;
    transition: opacity 0.3s;
  } 
  .btntooltip .tooltip::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #555 transparent transparent transparent;
  }
  .btntooltip:hover .tooltip {
    visibility: visible;
    opacity: 1;
  }
  }