#slides, .slidesjs-container { background:#fff;}

.slidesjs-previous { margin-left:10px }
.slidesjs-pagination { padding-right:10px }

#feature img {
/* Responsive images (ensure images don't scale beyond their parents) */

max-width: 100%;
/* Part 1: Set a maxium relative to the parent */

width: auto\9;
/* IE7-8 need help adjusting responsive images */

height: auto;
/* Part 2: Scale the height according to the width, otherwise you get stretching */

vertical-align: middle;
border: 0;
-ms-interpolation-mode: bicubic;
}
<!-- SlidesJS Optional: If you'd like to use this design -->

#slides {
display: none; 
}

#slides .slidesjs-navigation {
margin-top:5px;
}

a.slidesjs-next,
a.slidesjs-previous,
a.slidesjs-play,
a.slidesjs-stop {
background-image: url(https://www.uoguelph.ca/img/btns-next-prev.png);
background-repeat: no-repeat;
display:block;
width:12px;
height:18px;
overflow: hidden;
text-indent: -9999px;
float: left;
margin-right:5px;
}

a.slidesjs-next {
margin-right:10px;
background-position: -12px 0;
}

a:hover.slidesjs-next {
background-position: -12px -18px;
}

a.slidesjs-previous {
background-position: 0 0;
}

a:hover.slidesjs-previous {
background-position: 0 -18px;
}

a.slidesjs-play {
width:15px;
background-position: -25px 0;
}

a:hover.slidesjs-play {
background-position: -25px -18px;
}

a.slidesjs-stop {
width:18px;
background-position: -41px 0;
}

a:hover.slidesjs-stop {
background-position: -41px -18px;
}

.slidesjs-pagination {
margin: 7px 0 0;
float: right;
list-style: none;
}

.slidesjs-pagination li {
float: left;
margin: 0 1px;
}

.slidesjs-pagination li a {
display: block;
width: 13px;
height: 0;
padding-top: 13px;
background-image: url(https://www.uoguelph.ca/img/pagination.png);
background-position: 0 0;
float: left;
overflow: hidden;
}

.slidesjs-pagination li a.active,
.slidesjs-pagination li a:hover.active {
background-position: 0 -13px
}

.slidesjs-pagination li a:hover {
background-position: 0 -26px
}


#slides a:link,
#slides a:visited {
color: #333
}

#slides a:hover,
#slides a:active {
color: #9e2020
}



<!-- End SlidesJS Optional-->

<!-- SlidesJS Required: These styles are required if you'd like a responsive slideshow -->

#slides {
display: none
}

.container {
margin: 0 auto
}

/* For tablets & smart phones */
@media (max-width: 767px) {
body {
padding-left: 20px;
padding-right: 20px;
}
.container {
width: auto
}
}

/* For smartphones */
@media (max-width: 480px) {
.container {
width: auto;
}
}

/* For smaller displays like laptops */
@media (min-width: 768px) and (max-width: 979px) {
.container {
width: 724px
}
}

/* For larger displays */
@media (min-width: 1200px) {
.container {
width: 1170px
}
}