.mas{background:none;border:0;box-sizing:border-box;margin:1em;padding:.5em 1em;color:#6477b9;font-size:inherit;font-weight:700;position:relative;vertical-align:middle}.mas::before,.mas::after{box-sizing:inherit;content:'';position:absolute;width:100%;height:100%}.center:hover{color:#1b3c78}.center::before,.center::after{top:0;left:0;height:100%;width:100%;-webkit-transform-origin:center;transform-origin:center}.center::before{border-top:2px solid #1b3c78;border-bottom:2px solid #1b3c78;-webkit-transform:scale3d(0,1,1);transform:scale3d(0,1,1)}.center::after{border-left:2px solid #1b3c78;border-right:2px solid #1b3c78;-webkit-transform:scale3d(1,0,1);transform:scale3d(1,0,1)}.center:hover::before,.center:hover::after{-webkit-transform:scale3d(1,1,1);transform:scale3d(1,1,1);-webkit-transition:-webkit-transform .5s;transition:-webkit-transform .5s;transition:transform .5s;transition:transform .5s,-webkit-transform .5s}