Css – Stop text from moving on a:hover with border top

I have a floated h2 a tag with a 6px border-top applied on hover. When I hover over the text it pushes the text and elements below it down. How can I stop the border from moving the text and other elements.

THANKS!

My CSS:

html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{border:0;font-size:100%;font:inherit;margin:0;padding:0}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:none}table{border-collapse:collapse;border-spacing:0}

.container {
width: 960px;
margin: 0px auto;
}

.logo {
float: left;
clear: both;
margin-top: 30px;
}

body {
background-image: url("../images/bg.jpg");
border-top: 8px solid black;
}



h2 a {
font-family: arial;
text-decoration: none;
text-transform: uppercase;
font-size: 94px;
color: black;
float: right;
margin: 0px;
padding-top: 20px;

}

h2 a:hover {
border-top: 6px solid orange;
padding-top: 0px;

}

.clocknotes {
width: 437px;
margin: 0px auto;
clear: both;


}



.brand-three {
clear: both;
margin-top: 85px;
}

.brand-three {
font-size: 200px;
line-height: 140px;
float: left;
letter-spacing: -20px;

}

.quote {
clear: both;
width: 417px;
float: right;
text-align: right;
margin-top: -250px;
font-size: 26px;
}

.social {
clear: both;
float: right;
margin-top: -80px;
}

.footer {
clear: both;
top: 50px;
position: relative;
}