barebones/assets/sass/base/_forms.scss

/**
 * Blanket input styles for normalisation
 */

*:focus {
    outline: 0;
}

input, 
select, 
textarea {
    background-color: $base-background-colour;
    border: solid 1px $base-colour;
    border-radius: 0;
    color: $base-colour;
    line-height: ($base-spacing-unit * 1.5);
    height: ($base-spacing-unit * 1.5);
    padding: 0 ($base-spacing-unit / 2);
    width: 100%;
}

input[type="checkbox"], 
input[type="radio"] {
    background: transparent;
    border: 0;
    line-height: normal;
    height: auto;
    width: auto;
}

input[type="file"] {
    line-height: normal;
    height: auto;
    padding: ($base-spacing-unit / 4) ($base-spacing-unit / 2);
}

input[type="submit"] {
    -webkit-border-radius: 0; 
    border-radius: 0;
}

input[disabled] {
    background-color: whitesmoke;
    cursor: not-allowed;
}

select {
    line-height: normal;
    padding: 0;
    padding-left: ($base-spacing-unit / 2);
}

textarea {
    min-height: ($base-spacing-unit * 4);
    overflow: auto;
    vertical-align: top;
    resize: vertical;
}


/**
 * Form utility classes
 */

.form--inline {
    .form__group {
        display: inline-block;
    }
}

.checkbox,
.radio {
    display: block;
    padding-left: $base-spacing-unit;
    &.inline {
        display: inline-block;
    }
    > input {
        float: left;
        margin-left: -($base-spacing-unit);
        margin-top: 4px;
    }
}

.form__group {
    display: block;
    margin-bottom: $base-spacing-unit;
}

.form__label {
    display: block;
    margin-bottom: ($base-spacing-unit / 2);
}


/**
 * Input Group
 *
 * Allows for prepend/append of elements 
 * (such as icons) on an input.
 */

.input-group {
    position: relative;
    > input {
        padding: 0 ($base-spacing-unit * 2);
    }
    .input-group__addon {
        line-height: ($base-spacing-unit * 1.5);
        height: ($base-spacing-unit * 1.5);
        position: absolute;
        text-align: center;
        top: 0;
        width: ($base-spacing-unit * 1.5);
        &:first-child {
            left: 0;
        }
        &:last-child {
            right: 0;
        }
    }
}