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a.skip-main {
left: -999px;
position: absolute;
top: auto;
width: 1px;
height: 1px;
overflow: hidden;
z-index: -999;
}
a.skip-main:focus {
left: auto;
top: auto;
width: 30%;
height: auto;
overflow: auto;
margin: 0 35%;
padding: 5px;
font-size: 20px;
outline: 3px solid red;
text-align: center;
z-index: 999;
}