<template>
    <div class="abc"> 
        <div class="slds-float--right "><lightning-button  label={clickedButtonLabel} title="Show" onclick={handleClick} icon-name={toggleIconName}  class="slds-m-bottom_medium slds-m-right_x-small"  ></lightning-button>  </div>
        <div class="slds-m-left--large">Add Refrigeration</div>
<template if:true={boolVisible}>  

    
    <div class=" slds-p-around--medium" >
    <ul class="horizantal-list">
      <li class="def">Door Heater</li>
      <li class="def1">ECM Motors</li>
  </ul>
  <ul class="horizantal-list">
          <li class="def">LED STICKS</li>
          <li class="def1">Night Covers</li>
      </ul>
      <ul class="horizantal-list">
              <li class="def">Vending Controls</li>
              
          </ul>
    </div>

</template>  
<button class="collapsible">Open Collapsible</button>
<div class="content">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>
    </div>
</template>




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import { LightningElement,track } from 'lwc';

export default class CollapseFile extends LightningElement {
    @track toggleIconName = 'utility:add';  
    @track boolVisible = false;  
  
    handleClick() {  
        // const label = event.target.label;  
  
        if ( this.toggleIconName === 'utility:add' ) {  
  
            this.toggleIconName = 'utility:dash';  
            this.boolVisible = true;  
  
        } else if  ( this.toggleIconName === 'utility:dash' ) {  
              
            this.toggleIconName = 'utility:add';  
            this.boolVisible = false;  
  
        }  
    }
    

}