<div class="slds-form-element">
<label class="slds-form-element__label" for="text-input-id-1">Input Label</label>
<div class="slds-form-element__control slds-input-has-icon slds-input-has-icon_right">
        <lightning:input class=" " aura:id="fileId" onchange="{!c.handleFilesChange}" type="file" name="file" label="Upload Attachment" multiple="false"/>
        <lightning:icon iconName="utility:attach" alternativeText="Approved" class="slds-icon slds-input__icon slds-input__icon_right slds-icon-text-default"/>

        <lightning:textarea  name="txt" aura:id="comment" label="acc details" value="" placeholder=""/>

</div>