* {

font-family: Arial, Helvetica, sans-serif;

}

html,

body {

margin: 0;

border: 0;

padding: 0;

background-color: #fff;

}

main {

margin: auto;

width: 50%;

padding: 20px;

}

main {

text-align: center;

}

h1 {

font-size: 3.5em;

}