body{
  font: 15px/1.5 Arial, Helvetica, sans-serif;
  padding: 0;
  margin:0;
  background-image: url('https://throwgame.files.wordpress.com/2016/03/clashroyale.jpg?w=399&h=710');
  background-repeat: no-repeat;
  background-attachment: fixed;  
  background-size: cover;
  color: yellow;
}

.container{
  width: 80%;
  margin: auto;
  overflow: hidden;
}

ul{
  margin: 0;
  padding: 0;
}
/* Header */
header{
  background: blue;
  color: yellow;
  padding-top: 30px;
  min-height: 70px;
  border-bottom: gold 7px solid;
  font-size: 25px;
}

header a{
  color: yellow;
  font-weight: bold;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 16px;
}

header li{
  float: left;
  display: inline;
  padding: 0 20px 0 20px;
}

header #branding{
  float: left;
}

header #branding h1{
  margin: 0;
}

header nav{
  float: right;
  margin-top: 10px;
}

header .highlight, header .current a{
  color: gold;
  font-weight: bold;
}

header a:hover{
  color: gold;
  font-weight: bold;
}
/* Showcase */

#showcase {
  min-height: 400px;
  background-size: cover;
  text-align: center;
  color: blue;
}

#showcase h1{
  margin-top: 100px;
  font-size: 55px;
  margin-bottom: 10px;
}

#showcase p{
  font-size: 20px;
}
/* Newsletter */
#newsletter{
  padding: 15px;
  color: yellow;
  background: red;
}

#newsletter h1{
  float: left;
}

#newsletter form{
  float: right;
  margin-top: 15px;
}

#newsletter input[type="email"]{
  padding: 4px;
  height: 15px;
  width: 1000px;
}

.button_1{
  height: 38px;
  background: yellow;
  border: 7px solid gold;
  padding-left: 20px;
  padding-right: 20px;
  color: black;
}

footer{
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  color: yellow;
  background-color: blue;
  text-align: center;
  
}
@media(max-width: 768px){
  header #branding,
  header nav,
  header nav li,
  #newsletter h1,
  #newsletter form,
  #boxes .box,
  article#main-col,
  aside#sidebar {
    float: none;
    text-align: center;
    width: 100%;
  }
  
  [...]
}

  header{
    padding-bottom: 20px;
  }

  #showcase h1{
    margin-top: 40px;
  }

  #newsletter button {
    display: block;
    width: 100%;
  }

  #newsletter form input[type="email"] {
    width: 100%;
    margin-bottom: 5px;
  }
}
/* Sidebar */

aside#sidebar{
  float: right;
  width: 30%;
  padding: 5px;
}

aside#sidebar .contact input, aside#sidebar .contact textarea{
  width: 90%;
  padding: 5px;
}

article#main-col{
  float: left;
  width: 65%;
}
/* Services */
ul#services li{
  list-style: none;
  padding: 20px;
  border: yellow solid 7px;
  margin-bottom: 5px;
  background: blue;
  color: yellow;
}

ul#services h3{
  border-bottom: #353637 solid 1px;
}
  #newsletter form input[type="email"],
  .contact input,
  .contact textarea,
  .contact label{
    width: 100%;
    margin-bottom: 5px;
}