div,p,h1,h2,h3,h4,h5,h6,body,html,span,ul,li,a,i,b{
  padding: 0;
  margin: 0;
}
html,body{
  height: 100%;
  min-width: 1280px;
  min-height: 640px;
  font-size: 16px;
}

ul li{
  list-style-type: none;
}

.clear{
  clear: both;
}