CSS to allow use of Bootstrap grid with Gravity Forms

gform_grid.css

.gform_fields {
    list-style-type: none;
    margin-right: -15px;
    margin-left: -15px;
    padding: 0;
}

.gfield {
    margin-bottom: 15px;
    padding-right: 15px;
    padding-left: 15px;
}

.gfield input,
.gfield select,
.gfield textarea {
    display: block;
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: #555;
    background-color: #fff;
    background-image: none;
    border: 1px solid #ccc;
    border-radius: 4px;
    -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
    box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
    -webkit-transition: border-color ease-in-out .15s,-webkit-box-shadow ease-in-out .15s;
    -o-transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
    transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
}

.gfield textarea {
    height: 100px;
}

.validation_error,
.gfield_error .validation_message {
	color: crimson;
}

.validation_error,
.gform_confirmation_message {
	font-size: 18px;
}

.gfield_error .validation_message {
	margin-top: 5px;
}

.gfield_error select,
.gfield_error textarea,
.gfield_error input {
    border-color: crimson;
}