GalleryThemes.css

.gallery .control-button {
  color: #ccc;
  color: rgba(255, 255, 255, 0.4);
}

.gallery .control-button:hover {
  color: white;
  color: rgba(255, 255, 255, 0.8);
}

/*
	Theme controls how everything looks in Gallery CSS.
*/
.gallery {
  position: relative;
}

.gallery .item {
  height: 100%;
  overflow: hidden;
  text-align: left;
  margin:0 auto;
}

.gallery .controls {
  position: absolute;
  margin-top:1em;
  width: 100%;
  text-align: center;
}

.gallery .control-button {
  display: inline-block;
  margin: 0 .02em;
  font-size: 3em;
  text-align: center;
  text-decoration: none;
  transition: color .1s;
}

/*my styles*/

body{
  background-color:#c1e553;
}

.RoRo, .Willie{
  margin: 0 auto;
  position:relative;
}

h1{
    font-family: 'Source Sans Pro', sans-serif;
    font-weight:200;
    padding-left:1em;
}

.copyright{
  text-align:left;
  float:left;
  margin-left:3em;
}

.credit{
  text-align:right;
  float: right;
  margin-right:3em;
}

.copyright, .credit{
  font-size:0.75em;
  color: black;
  font-family: 'Source Sans Pro', sans-serif;
  font-weight:400;

}

.copyright a, .credit a{
  text-decoration:none;
  color:black;
  font-weight:bold;

}

.copyright a:hover, .credit a:hover{
  text-decoration:underline;
  cursor:default;
}

footer{
  margin-top:3em;
  clear:both;
}

@media screen and (max-width: 450px) {
  .credit{
    float:left;
    text-align:left;
    clear:both;
    margin: 0 0 0 1em;
  }

  .copyright{
    margin-left:1em;
  }

  footer{
    margin-top:2em;
  }

  h1{
    margin-bottom:0em;
    padding-left:0.5em;
  }

  .gallery .controls {
  position: absolute;
  margin-top:-0.75em;
  width: 100%;
  text-align: center;
}
}