label {
    float:left;
    width:140px;
    font-weight:bold;
}

input, select, textarea {
    width:210px;
    clear:left;
    margin-bottom:4px;
}

br {
    clear:left;
}

.main_block {
    text-align:left;
    margin-left:auto;
    margin-right:auto;
}

.form_button {
    text-align:center;
}