How to make border blur css

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);
}

Similar codes

9 votes134 views3 answers
Css font style
CSS
0 vote139 views1 answer
Table td data in middle
CSS
32 votes128 views6 answers
@font-face in css
CSS
0 vote145 views1 answer
Add css class c#
CSS
0 vote145 views1 answer
Transparent circle in a div
CSS
1 vote242 views2 answers
Block elements css
CSS
5 votes129 views5 answers
Min padding
CSS
2 votes120 views2 answers
Half circle css
CSS
0 vote128 views1 answer
Css animation delay does not work
CSS
0 vote154 views1 answer
Scroll tbody fixed thead
CSS