#calculadora {
    width:200px;
}

#variaveis {
    float:left;
}

#variaveis,
#variaveis fieldset {
    width:170px !important;
}

#resultados {
    width:100%;
    padding:0;
    text-align:center;
    width:370px;
    float:left;
    margin-left:30px;
}

table thead {
    background-color:#DCE4C8;
}

#variaveis fieldset p label {
    font-weight: bold;
}

a.option {
    float:right;
}