.icon {
    display: inline-flex;        
    align-items: center;           
    justify-content: center;
    
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    
    width: 20px;   
    height: 20px;
    margin-right: 6px; 
    vertical-align: middle; 
  }

.icon-tick-green {
    background-image: url('images/icon-tick.png');
}
  

.icon-tick-blue{
    background-image: url('images/icon-tick-blue.svg');
    width: 40px;
    height: 40px;
}