<style>
hr{
height: 1px;
background-color: #ccc;
border: none;
}
</style>
<!-- HTML -->
<!-- You can change the style of the horizontal line like this: -->
<hr style="width:50%", size="3", color=black>
<!-- Or like this: -->
<hr style="height:2px; width:50%; border-width:0; color:red; background-color:red">
hr {
border: none;
height: 1px;
/* Set the hr color */
color: #333; /* old IE */
background-color: #333; /* Modern Browsers */
}<hr class="style-two">
/* Inset */
hr.style-two {
border: 0;
height: 0;
border-top: 1px solid rgba(0, 0, 0, 0.1);
border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}hr {
border:none;
border-top:1px dashed #f00;
color:#fff;
background-color:#fff;
height:1px;
width:50%;
}hr.hr-1 {
margin: 100px;
border: 0;
height: 1px;
background-image: linear-gradient(
to right,
rgba(0, 0, 0, 0),
rgba(0, 0, 0, 0.75),
rgba(0, 0, 0, 0)
);
}