a img { border: none; }

a:hover {
background-color: #e0e0e0;
}

h1 {
margin-top: 5px;
font-weight: bold;
font-size: 28px;
margin-left:8px;
}
h2 {
margin: 0;
padding: 0;
font-weight: normal;
font-size: 20px;
background-color: #ffffff;
}
h3 {
margin-top: 5px;
font-size: 16px;
line-height: 30px;
padding-left:5px;
}
h4 {
color:violet;
}
div.main {
  width: 75%;
  text-align: left;
  margin-left: auto; margin-right: auto;
}