.hover_button_main{margin:30px 20px;padding:15px 20px;border-radius:10px;border:2px solid;font:16px 'Open Sans',sans-serif;text-transform:uppercase;background:0;outline:0;cursor:pointer;-webkit-transition:all .5s;transition:all .5s;width:100%}.hover_button{color:#4a7986;border-color:#4a7986;position:relative;overflow:hidden}.hover_button:after{content:"";position:absolute;top:50%;left:0;transform:translateY(-50%);width:100%;height:0;background-color:#337ab7;z-index:-1;-webkit-transition:all .5s;transition:all .5s}.hover_button:hover{color:#fff}.hover_button:hover:after{height:110%}