.box19 {
    position: relative;
    padding:0.25em 1em;
}
.box19:before,.box19:after{ 
    content:'';
    width: 20px;
    height: 30px;
    position: absolute;
    display: inline-block;
}
.box19:before{
    border-left: solid 1px #ffffff;
    border-top: solid 1px #ffffff;
    top:0;
    left: 0;
}
.box19:after{
    border-right: solid 1px #ffffff;
    border-bottom: solid 1px #ffffff;
    bottom:0;
    right: 0;
}
.box19 p {
    margin: 0; 
    padding: 0;
}