.decoration{display:block;position:relative;width:-moz-fit-content;width:fit-content;z-index:1}.decoration:before{background-color:#f2f2f2;content:"";height:4px;left:-10px;min-height:4px;position:absolute;top:calc(100% + 10px);width:calc(100% + 40px);z-index:1}