form reset + structure

form.html

<form method="POST" name="contactform" action="contact-form-handler.php">
            <div class="row-full-width">
                <div class="span-6 padding-all">
                    <fieldset>
                        <label for="NameInput">Your Name:</label>
                        <input type="text" placeholder="Name..." id="NameInput" name="name">
                    </fieldset>
                </div>
                <div class="span-6 padding-all">
                    <fieldset>
                        <label for="EmailInput">Your Email:</label>
                        <input type="email" placeholder="Email..." id="EmailInput" name="email"
                               required>
                    </fieldset>
                </div>
                <div class="span-6 padding-all">
                    <fieldset>
                        <label for="DateInput">Date:</label>
                        <input type="date" id="DateInput" name="date" required>
                    </fieldset>
                </div>
                <div class="span-6 padding-all">
                    <fieldset>
                        <label for="RangeInput">Range:</label>
                        <input type="range" id="RangeInput" name="range" min="0" max="100" value="50">
                    </fieldset>
                </div>
                <div class="span-12 padding-all">
                    <fieldset>
                        <label for="FileInput">File upload:</label>
                        <input type="file" id="FileInput" name="file" required>
                    </fieldset>
                </div>
                <div class="span-12 padding-all">
                    <fieldset>
                        <label for="GroupedInputLabels">Label groups:</label>
                        <div class="form-group-label">
                            <div class="form-group-label_label">
                                <span class="add-on">Label</span>
                            </div>
                            <div class="form-group-label_input">
                                <input type="text" placeholder="I have labels left and right..." id="GroupedInputLabels"
                                       name="groupedlabels">
                            </div>
                            <div class="form-group-label_label">
                                <span class="add-on">Also label</span>
                            </div>
                        </div>
                    </fieldset>
                </div>
                <div class="span-12 padding-all">
                    <fieldset>
                        <label for="SelectOption">Reason for contacting:</label>
                        <select id="SelectOption" name="select">
                            <option value="Option 1">Questions</option>
                            <option value="Option 2">Admiration</option>
                            <option value="Option 3">Can I get your number?</option>
                            <optgroup label="Option Group">
                                <option value="Option 4">Questions</option>
                                <option value="Option 5">Admiration</option>
                                <option value="Option 6">Can I get your number?</option>
                            </optgroup>
                        </select>
                    </fieldset>
                </div>
                <div class="span-6 padding-all">
                    <fieldset>
                        <legend>Select Services:</legend>
                        <div>
                            <input type="checkbox" id="checkbox1"/>
                            <label for="checkbox1">Red</label>
                        </div>
                        <div>
                            <input type="checkbox" id="checkbox2" checked="checked"/>
                            <label for="checkbox2">Yellow</label>
                        </div>
                        <div>
                            <input type="checkbox" id="checkbox3" checked="checked" disabled="disabled"/>
                            <label for="checkbox3">Green</label>
                        </div>
                        <div>
                            <input type="checkbox" id="checkbox4" disabled="disabled"/>
                            <label for="checkbox4">Brown</label>
                        </div>
                    </fieldset>
                </div>
                <div class="span-6 padding-all">
                    <fieldset>
                        <legend>Select Services:</legend>
                        <div>
                            <input id="radio1" name="radio" type="radio">
                            <label for="radio1">Option 1</label>
                        </div>
                        <div>
                            <input id="radio2" name="radio" type="radio" checked="checked">
                            <label for="radio2">Option 2</label>
                        </div>
                        <div>
                            <input id="radio3" name="radio" type="radio" disabled="disabled">
                            <label for="radio3">Option 2</label>
                        </div>
                    </fieldset>
                </div>
                <div class="span-12 padding-all">
                    <fieldset>
                        <label for="exampleMessage">Message</label>
                        <textarea rows="5" placeholder="Hi Rio..." id="exampleMessage" name="message"></textarea>
                    </fieldset>
                </div>
                <div class="span-12 padding-all">
                    <fieldset>
                        <input type="submit" value="Submit" class="bg-tertiary">
                    </fieldset>
                </div>
            </div>
        </form>

form.scss

.form {
    width: 100%;
}

textarea {
    resize: none;
}

label,
legend {
    display: block;
    margin-bottom: $baseline;
}

fieldset {
    padding: 0;
    border-width: 0;
}

::-webkit-input-placeholder { /* Chrome/Opera/Safari */
    color: $placeholder-color;
}

::-moz-placeholder { /* Firefox 19+ */
    color: $placeholder-color;
    opacity: 1;
}

:-ms-input-placeholder { /* IE 10+ */
    color: $placeholder-color;
}

:-moz-placeholder { /* Firefox 18- */
    color: $placeholder-color;
}

input[type='email'],
input[type='number'],
input[type='search'],
input[type='text'],
input[type='tel'],
input[type='url'],
input[type='date'],
input[type='password'],
input[type='file'],
input[type='range'],
input[type='datetime'],
input[type='datetime-local'],
input[type='month'],
input[type='week'],
input[type='time'],
textarea,
select,
optgroup {
    @include transitions;
    padding: ($baseline/2);
    width: 100%;
    border: 1px solid $input-border-color;
    background-color: $white;
    box-shadow: none;
    -webkit-appearance: none;
    border-radius: 0;
    font-family: $base-font;

    &:focus {
        outline: 0;
        border: 1px solid $input-focus-color;
    }

    &.primary {
        border: 1px solid $primary;

        &:focus {
            border: 1px solid tint($primary, 20%);
        }

    }

    &.secondary {
        border: 1px solid $secondary;

        &:focus {
            border: 1px solid tint($secondary, 20%);
        }

    }

    &.tertiary {
        border: 1px solid $tertiary;

        &:focus {
            border: 1px solid tint($tertiary, 20%);
        }

    }

    &.error {
        border: 1px solid $error;

        &:focus {
            border: 1px solid tint($error, 20%);
        }

    }

    &.warning {
        border: 1px solid $warning;

        &:focus {
            border: 1px solid tint($warning, 20%);
        }

    }

    &.success {
        border: 1px solid $success;

        &:focus {
            border: 1px solid tint($success, 20%);
        }

    }

    &.neutral {
        border: 1px solid $neutral;

        &:focus {
            border: 1px solid tint($neutral, 20%);
        }

    }

    &.white {
        border: 1px solid $white;

        &:focus {
            border: 1px solid tint($white, 20%);
        }

    }

}

input[type="file"] {
    cursor: pointer;
    border-radius: 0;
    font-family: $base-font;

    &::-webkit-file-upload-button {
        background: $file-upload-button-background;
        padding: .6em 2em;
        border: 0;
        color: $white;
        cursor: pointer;
    }

    &::-ms-browse {
        background: $file-upload-button-background;
        padding: .6em 2em;
        border: 0;
        color: $white;
        cursor: pointer;
        float: left;
    }

}

input[type='checkbox'],
input[type='radio'] {
    position: absolute;
    opacity: 0;
    z-index: -1;

    & + label {
        position: relative;
        display: inline-block;
        padding-left: ($baseline*1.5);
        cursor: pointer;

        &:before, &:after {
            @include transitions;
            position: absolute;
            top: 0;
            left: 0;
            display: block;
            width: $baseline;
            height: $baseline;
        }

        &:before {
            content: "";
            border: 1px solid $checkbox-radio-border-color;
        }

        &:after {
            transform: scale(0);
        }

    }

    &:disabled {

        & + label {
            color: $disabled;
        }

        &:not(:checked), &:checked {

            & + label {

                &:before {
                    background-color: $disabled;
                }

            }

        }

        &:checked {

            & + label {

                &:after {
                    color: $disabled;
                }

            }

        }

    }

    &:focus {

        &:not(:checked), &:checked {

            & + label {

                &:before {
                    outline: 0;
                    border: 1px solid $checkbox-radio-focus-border-color;
                }

            }

        }

    }

}

input[type='checkbox'] {

    & + label {

        &:after {
            content: "\2714";
            color: $checkbox-icon-color;
            text-align: center;
            line-height: 1.2;
            top: 2px;
        }

    }

    &:checked {

        & + label {

            &:after {
                transform: scale(1);
            }

        }

    }

}

input[type='radio'] {

    & + label {

        &:before {
            border-radius: 100%;
        }

        &:after {
            content: " ";
            background: $radio-icon-color;
            border-radius: 100%;
        }

    }

    &:checked {

        & + label {

            &:after {
                transform: scale(.5);
            }

        }

    }

}

input[type='range'] {
    -webkit-appearance: none;
    display: block;
    margin: 1em auto;
    padding: 0 ($baseline/2);
    width: 100%;
    min-height: 3.25em;
    /* IE */
    font-size: 1em;
    cursor: pointer;

    /* CHROME, OPERA, SAFARI */
    &::-webkit-slider-runnable-track {
        -webkit-appearance: none;
        height: 0.5em;
        background: $range-slider-runnable-track-background;
    }

    &::-webkit-slider-thumb {
        @include border-radius-round;
        -webkit-appearance: none;
        position: relative;
        margin: -0.4em 0;
        border: none;
        width: 1.2em;
        height: 1.2em;
        background: $range-slider-thumb;
    }

    /* FIREFOX */
    &::-moz-range-track {
        border: none;
        height: 0.5em;
        background: $range-slider-runnable-track-background;
    }

    &::-moz-range-thumb {
        @include border-radius-round;
        border: none;
        width: 1.2em;
        height: 1.2em;
        cursor: ew-resize;
        background: $range-slider-thumb;
    }

    &::-moz-range-progress {
        background: none;
    }

    /* IE */
    &::-ms-track {
        border: none;
        height: 0.5em;
        background: $range-slider-runnable-track-background;
        color: transparent;
    }

    &::-ms-thumb {
        @include border-radius-round;
        border: none;
        width: 1.2em;
        height: 1.2em;
        background: $range-slider-thumb;
    }

    &::-ms-fill-lower, &::-ms-fill-upper {
        background: none;
    }

    &::-ms-tooltip {
        display: none;
    }

}