Lin tracejado no CSS
hr {
border:none;
border-top:1px dashed #f00;
color:#fff;
background-color:#fff;
height:1px;
width:50%;
}
Brainy Booby
hr {
border:none;
border-top:1px dashed #f00;
color:#fff;
background-color:#fff;
height:1px;
width:50%;
}/* The black border occurs if you didn't set the border style */
button {
border-style: solid;
}