hr 1 pixel height code example
Example 1: css thinner hr
hr {
border: none;
height: 1px;
/* Set the hr color */
color: #333; /* old IE */
background-color: #333; /* Modern Browsers */
}
Example 2: make bigger in boootstrap
<hr style="height:1px;border:none;color:#333;background-color:#333;" />