div{
width:150px;
height:150px;
background-color:black;
border-radius:15px;
border-style:solid;
border-width:1px;
border-color:red;
box-shadow: 0px 0px 15px rgba(255,0,0);
}
filter: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='a' x='0' y='0' width='1' height='1'%3E%3CfeGaussianBlur stdDeviation='4' result='b'/%3E%3CfeMorphology operator='dilate' radius='4'/%3E %3CfeMerge%3E%3CfeMergeNode/%3E%3CfeMergeNode in='b'/%3E%3C/feMerge%3E%3C/filter%3E%3C/svg%3E#a");div{
width:150px;
height:150px;
background-color:black;
border-radius:15px;
border-style:solid;
border-width:1px;
border-color:red;
box-shadow: 0px 0px 15px rgba(255,0,0);
}