.box18{
    margin:2em 0;
    position: relative;
    padding: 0.25em 1em;
    border: solid 2px #ffcb8a;
    border-radius: 3px 0 3px 0;
}
.box18:before,.box18:after
{
    content: '';
    position: absolute;
    width:10px;
    height: 10px;
    border: solid 2px #ffcb8a;
    border-radius: 50%;
}
.box18:after {
    top:-12px;
    left:-12px;
}
.box18:before {
    bottom:-12px;
    right:-12px;
}
.box18 p {
    margin: 0; 
    padding: 0;
}