html 
{
 font-family: "roboto", "segoe ui";
 font-size: 14px;
}

body 
{
 margin: 0;
 padding: 0;
}

.clear-fix:before,
.clear-fix:after 
{
 content: "";
 display: table;
 clear: both;
}

*
{
    box-sizing: border-box;
}