.section{
  height:520px;
}
section .introduction
{
  width:350px;
  float:left;
  margin:10px auto;
  margin-left:20px;
  padding:10px;
  background:#808080;
  border: 1px solid #808080;
  border-radius:15px;
  box-shadow:3px 3px 3px 2px #A8A8A8;
}
.section .introduction p{
  color:#FFFFFF;
  font-size:16px;
}
.introduction p{
   line-height:120%;  
   padding:0.5px 0;
}
.section .photo
{
 width:540px;
 height: 250px;
 float:right;
 margin:10px auto;
 margin-left:10px;
 margin-right:15px;

 padding:10px; 
}
.section .products
{
 clear:both;
 width:1000px;
 background:#FFFFFF;
}
.section .products ul{
 margin:10px;
}

.section .products ul li {
  float:left;
  width:170px;
  height:170px;
  margin:9px;
  border: 0.5px solid #E8E8E8;
  border-radius:10px;
  text-align:center;
  font-size:14px;
  font-weight:bold;
  color:#808080;
  box-shadow:3px 3px 3px #A8A8A8;
  transition: all 0.5s;
}

.section .products ul li:hover{
  transform:scale(1.2);
  background:#FFFFFF;
  border: 1px solid #D8D8D8;
}

* SLIDER STRUCTURE */

#slider {
   background: #000;
   border: 5px solid #eaeaea;
   box-shadow: 1px 1px 5px rgba(0,0,0,0.7);
   height: 250px;
   width: 540px;
   margin: 40px auto 0;
   overflow: visible;
   position: relative;
}

/* HIDE ALL OUTSIDE OF THE SLIDER */

#mask {
   overflow: hidden;
   height: 260px;
}

/* IMAGE LIST */

#slider ul {
   margin: 0;
   padding: 0;
   position: relative;
}

#slider li {
   width: 540px;  /* Width Image */
   height: 280px; /* Height Image */
   position: absolute;
   top: -325px; /* Original Position - Outside of the Slider */
   list-style: none;
}

#slider li.firstanimation {
   animation: cycle 20s linear infinite;
}

#slider li.secondanimation {
   animation: cycletwo 20s linear infinite;
}

#slider li.thirdanimation {
   animation: cyclethree 20s linear infinite;
}

#slider li.fourthanimation {
   animation: cyclefour 20s linear infinite;
}

#slider li.fifthanimation {
   animation: cyclefive 20s linear infinite;
}

/* ANIMATION */

@keyframes cycle {
   0%  { top: 0px; } /* When you start the slide, the first image is already visible */
   4%  { top: 0px; } /* Original Position */
   16% { top: 0px; opacity:1; z-index:0; } /* From 4% to 16 % = for 3 seconds the image is visible */
   20% { top: 325px; opacity: 0; z-index: 0; } /* From 16% to 20% = for 1 second exit image */
   21% { top: -325px; opacity: 0; z-index: -1; } /* Return to Original Position */
   92% { top: -325px; opacity: 0; z-index: 0; }
   96% { top: -325px; opacity: 0; } /* From 96% to 100% = for 1 second enter image*/
   100%{ top: 0px; opacity: 1; }
}

@keyframes cycletwo {
   0%  { top: -325px; opacity: 0; } /* Original Position */
   16% { top: -325px; opacity: 0; }/* Starts moving after 16% to this position */
   20% { top: 0px; opacity: 1; }
   24% { top: 0px; opacity: 1; }  /* From 20% to 24% = for 1 second enter image*/
   36% { top: 0px; opacity: 1; z-index: 0; }   /* From 24% to 36 % = for 3 seconds the image is visible */
   40% { top: 325px; opacity: 0; z-index: 0; } /* From 36% to 40% = for 1 second exit image */
   41% { top: -325px; opacity: 0; z-index: -1; }   /* Return to Original Position */
   100%{ top: -325px; opacity: 0; z-index: -1; }
}

@keyframes cyclethree {
   0%  { top: -325px; opacity: 0; }
   36% { top: -325px; opacity: 0; }
   40% { top: 0px; opacity: 1; }
   44% { top: 0px; opacity: 1; }
   56% { top: 0px; opacity: 1; }
   60% { top: 325px; opacity: 0; z-index: 0; }
   61% { top: -325px; opacity: 0; z-index: -1; }
   100%{ top: -325px; opacity: 0; z-index: -1; }
}

@keyframes cyclefour {
   0%  { top: -325px; opacity: 0; }
   56% { top: -325px; opacity: 0; }
   60% { top: 0px; opacity: 1; }
   64% { top: 0px; opacity: 1; }
   76% { top: 0px; opacity: 1; z-index: 0; }
   80% { top: 325px; opacity: 0; z-index: 0; }
   81% { top: -325px; opacity: 0; z-index: -1; }
   100%{ top: -325px; opacity: 0; z-index: -1; }
}
@keyframes cyclefive {
   0%  { top: -325px; opacity: 0; }
   76% { top: -325px; opacity: 0; }
   80% { top: 0px; opacity: 1; }
   84% { top: 0px; opacity: 1; }
   96% { top: 0px; opacity: 1; z-index: 0; }
   100%{ top: 325px; opacity: 0; z-index: 0; }
}