.tooltip .tooltip-inner {
    background-color:white;
    color: black;
    border-style: solid;
    border-color: black;
    delay: 1000;
  }

.goback:target {
    border: 2px solid #D4D4D4;
    background-color: #e5eecc;
    
}
.appari {
	display: none;
	color:blue;
	font-weight: bold; 
}
.goback:target .appari {
    display: inline;
}

 

 
.pic {
  border: 1px solid #ccc;
  margin: auto;
  height: 80%;
  overflow: hidden;
  box-shadow:  5px 5px 5px #111;  
  text-align: center;
  cursor:pointer;
  position: relative;
  
}

.pic img, .img-responsive {
  margin: auto;
  transition: all 0.4s ease-in-out;
  z-index: -1;  
}


.pic img:hover, .img-responsive:hover {
opacity: 0.4;
transform: scale(1.1);
z-index: -1;
}

.pic .caption {
  position: absolute;
  bottom: 0;
	background: rgba(0,0,0,0.6);
  color: #fff;
  display: table;
	margin: auto;
	display: table;
	width: 100%;
  z-index: 0;
}
.thumbnail {
  height: 150px;
}

b {
  color: black;;
}

a {
  font-weight: bold;
}

.math {
     display: block;
	 overflow-x: scroll;
	 transition: all 0.4s ease-in-out;
}
.math:hover {
    transform: scale(1.1);
}
#myModal img{
  margin: auto;
  width: 100%;
}

h3{
color: #ff9900;
font-weight: bold;
}

h4{
color: #ff9900;
font-weight: bold;
}