.hamburger{overflow:visible;transition-duration:.15s;border:0;transition-timing-function:linear;color:inherit;font:inherit;text-transform:none;background-color:transparent;margin:0;cursor:pointer;transition-property:opacity,filter;display:inline-block}a:hover .hamburger{opacity:.7}.hamburger-box{height:16px;position:relative;width:20px;display:inline-block}.hamburger-inner{top:50%;margin-top:2px;display:block}.hamburger-inner,.hamburger-inner:after,.hamburger-inner:before{height:2px;transition-duration:.15s;transition-timing-function:ease;position:absolute;background-color:#000;border-radius:3px;width:20px;transition-property:transform}.hamburger-inner:after,.hamburger-inner:before{content:"";display:block}.hamburger-inner:before{top:-7px}.hamburger-inner:after{bottom:-7px}