body {
    background: gray;
}
h2 {
    font-family: fantasy;
    text-align: center;
}
#cambiar {
    background-color: peachpuff;
    font-family: verdana;
    font-size: 12px;
    position: relative;    
}

#inicializar {
    background-color: peachpuff;
    font-family: verdana;
    font-size: 12px;
    position: relative;
    float: right;
}
#caja {
    padding: 20px;
    margin: 20px;
    background-color: saddlebrown;
}
#registro {
     font-family: fantasy;
    text-align: center;
}