img.logo {
  display: block;
    margin-left: auto;
    margin-right: auto;
}

body {
  margin: 0;
 font-family: sans-serif;
    color: white; 
    padding: 0;
    vertical-align: top;
}

h1.title {
    font-size: 100px;
    text-align: center;
    color: white;
}

#background-header {
   background: url(pexels-photo.jpg);
  background-size: cover;
}

p.description {
  width: 75%;
    font-size: 30;
}

#header {
  padding-top: 10em;
       background: url(do-sharp.jpeg);
  background-size: cover;
    vertical-align: top;
    overflow: hidden;
    margin: 0;

}

#main {
  background: url(tockBackground.png);
  display: block;
  background-origin: padding-box;
  margin-bottom: 0;
    height: 600px;
       
}


#left {
  float: left;
  display: block;
  width: 50%;
}

#right {
    float: left;
    display: block;
    width: 50%;
}

#footer-list {
 margin-left: auto;
    margin-right: auto;
    margin-top: auto;
    margin-bottom: auto;
    height: 30px;
}

#footer-list li{
  float: left;
  list-style: none;
    margin-right: 100px;
    padding-top: 30px;
    padding-bottom: 30px;
}

#footer ul {
    width: 800px;
    height: 100px;
}

#footer-list li a {
  text-decoration: none;
  color: white;
}


#f-container {
    width: inherit;
}

img.preview {
    width: 500;
    height 800;
}

#footer {
  position: relative;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: black;
    height: 10%;
}




@media screen and (max-width: 700px) {
    #right {
        float: none;
        width: 100%;
        vertical-align: top;
        margin-left: auto;
        margin-right: auto;
    }
    
    #left {
        float: none;
        width: 100%;
    }
    
    #main {
      background-repeat: repeat-y;
        height: 1600px;
        margin-top: -40;
    }
    
    p.description {
        text-align: center;
        width: 100%;
    }
    
    h2 {
        text-align: center;
        font-size: 45px;
    }
}