Document
*{
margin: 0;
padding: 0;
}
div{
background-color: black;
width: 300px;
height: 300px;
border-top-style: solid;
border-color: blue;
border-top-width: 20px;
border-left-color: coral;
border-left-style:solid;
border-left-width: 30px;
}
000
