* {
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

html {
    height:100%;
}

body  {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 100%;
    margin: 0;
    padding: 0;
    height: 100%;
}

img {
    border: 0;
    max-width: 100%;
    height: auto;
    display: block;
}

.clearfix:after {
    clear: both;
    content: "";
    display: block;
    font-size: 0;
    height: 0;
    visibility: hidden;
}