style.css

 <style>
    form {
    /* Just to center the form on the page */
    margin: 0 auto;
    width: 400px;	
    /* To see the outline of the form */
    padding: 0em;
    border: 1px solid #CCC;
    border-radius: 1em;
    }

    form div + div {
    margin-top: 0px;
	    }

    label{
    /* To make sure that all labels have the same size and are properly aligned */
    display: inline-block;
    width: 210px;
    text-align: left;
    }

    input, textarea {
    /* To make sure that all text fields have the same font settings
        By default, textareas have a monospace font */
    font: 1em sans-serif;

    /* To give the same size to all text fields */
    width: 360px;
    box-sizing: border-box;

    /* To harmonize the look & feel of text field border */
    border: 1px solid #999;
    }

    input:focus, textarea:focus {
    /* To give a little highlight on active elements */
    border-color: #000;
    }

    textarea {
    /* To properly align multiline text fields with their labels */
    vertical-align: top;

    /* To give enough room to type some text */
    height: 5em;
    }

    .button {
    /* To position the buttons to the same position of the text fields */
    padding-left: 90px; /* same size as the label elements */
    }

    button {
    /* This extra margin represent roughly the same space as the space
        between the labels and their text fields */
    margin-left: .5em;
    }
    </style>