body {
  background-image: url();
  background-repeat: no-repeat;
  font-family: Geneva, "Lucida Sans", "Lucida Grande", "Lucida Sans Unicode", Verdana, sans-serif;
}

@media screen and (max-width: 500px) {
  html {
    background: url(img/background1.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }

  #frm {
    background-color: gray;
    border: solid gray 1px;
    width: 50%;
    border-radius: 5px;
    margin: 75px auto;
    background: #1E90FF;
    padding: 50px;
  }

  #btn {
    color: #000000;
    background-color: #DCDCDC;
    padding: 5px;
    margin-left: 5%;
    width: 155px;
    height: 28px;
    font-weight: bold;
    margin-top: 10px;
  }

  input {
    width: 150px;
    margin-left: 5%;
  }

  label {
    font-weight: bold;
    margin-left: 5%;
  }

  img {
    width: 150px;
    height: 45px;
    margin-left: 5%;
  }
}

@media screen and (min-width: 501px) and (max-width: 799px) {
  html {
    background: url(img/background1.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }

  #frm {
    background-color: gray;
    border: solid gray 1px;
    width: 40%;
    border-radius: 5px;
    margin: 100px auto;
    background: #1E90FF;
    padding: 50px;
  }

  #btn {
    color: #000000;
    background-color: #DCDCDC;
    padding: 2px;
    margin-left: 20%;
    width: 155px;
    height: 25px;
    font-weight: bold;
    margin-top: 10px;
  }

  input {
    width: 150px;
    margin-left: 20%;
    height: 15px;
  }

  label {
    width: 10%;
    font-weight: bold;
    margin-left: 20%;

  }

  img {
    width: 150px;
    height: 45px;
    margin-left: 15%;
  }
}

@media screen and (min-width: 800px) {
  html {
    background: url(img/background1.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }

  img {
    width: 250px;
    height: 100px;
    margin-left: 30%;
    margin-top: 1%;
  }

  #frm {
    background-color: gray;
    border: solid gray 1px;
    width: 30%;
    border-radius: 5px;
    margin: 100px auto;
    background: #1E90FF;
    padding: 50px;
  }

  #btn {
    color: #000000;
    background-color: #DCDCDC;
    padding: 5px;
    margin-left: 30%;
    width: 255px;
    height: 30px;
    font-weight: bold;
    margin-top: 10px;
  }

  input {
    width: 250px;
    margin-left: 30%;
    height: 25px;
  }

  label {
    font-weight: bold;
    margin-left: 30%;
  }
}