body {background-color: lightyellow;}

div {
	background-color: lightyellow; 
	opacity: 0.5;	
}

div {
	background-color: lightyellow; 
	opacity: 0.5;	
}

img {
  border: 2px solid #ddd;
  border-radius: 4px;
  padding: 5px;
  width: 300px;
}

img:hover {
  box-shadow: 0 0 4px 2px rgba(0, 140, 186, 0.5);
}

.dot {
  height: 20px;
  width: 20px;
  background-color: #bbb;
  border-radius: 60%;
  display: inline-block;
}
/* unvisited link */
a:link {
  color: red;
}
/* unvisited link */
a:link {
  color: blue;
}

/* visited link */
a:visited {
  color: gray;
}

/* mouse over link */
a:hover {
  color: yellow;
}

/* selected link */
a:active {
  color: red;
}

table.custom_class {
}

table.custom_class th {
  padding: 15px;
  background-color:yellow;
}
table.custom_class td {
  padding: 5px;
  border:solid 1px #006CFF
}
table.custom_class tr {
    margin:0;
    padding:4px;
}
background.custom_class{background-color: yellow;
}

table.custom.class th
table, th, td {
  border: 3px solid orange;
}
table.custom_class {border-style: double;
border-width: 1px;
border-color: #000000;
width: 250px;
background-color: yellow;
}
background.custom_class{background-color: orange;
}

iframe{
    border-width: 5px;
}