#body {
  font-family: sans-serif;
  margin: 0;
  font-size:17px;
  font-weight: bold;

}
*{
  border:0;
  margin:0;
  outline:0;
  padding: 0;
}
.nav{
     background:#fff;
     min-height:59px;
     overflow:auto;
}
.nav .left{
      float:left;
      margin-left:lem;
}
#ul{
   list-style:none;
}
.nav .left li{
    float:left;
}
#aa{
 display:block;
 padding:17px 40px;
 line-height:30px;
 color:#39c951;
 background-color:brown;
 text-decoration:none;
 font-size:30px;
}
.nav .left  a:hover{
background:red;
}

* {
  box-sizing: border-box;
}

#img {
  vertical-align: middle; 
  
}

/* Position the image container (needed to position the left and right arrows) */
.container {
  position: relative;
}

/* Hide the images by default */
.mySlides {
  display: none;
}

/* Add a pointer when hovering over the thumbnail images */
.cursor {
  cursor: pointer;
}

/* Next & previous buttons */
.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 40%;
  width: auto;
  padding: 16px;
  margin-top: -50px;
  color: red;
  font-weight: bold;
  font-size: 20px;
  border-radius: 0 3px 3px 0;
  user-select: none;
  -webkit-user-select: none;
}

/* Position the "next button" to the right */
.next {
  right: 20px;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
  background-color: rgba(0, 0, 0, 0.8);
}

/* Number text (1/3 etc) */
.numbertext {
  color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
}

/* Container for image text */
.caption-container {
  text-align: center;
  background-color: rgb(48, 153, 62);
  padding: 2px 16px;
  color: white;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}

/* Six columns side by side */
.column {
  float: left;
  width: 16.3%;
  padding:10px;

}

/* Add a transparency effect for thumnbail images */
.demo {
  opacity: 0.6;
}

.active,
.demo:hover {
  opacity: 1;
}

.center1{
display:block;
width:40%;
height:40%;
margin-left:auto;
margin-right:auto;

}

.clr{

    color:red;
    background-color:white;
    text-align:center;
}