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<svg width='30px' height='30px' viewBox='0 0 30 30'>
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<rect y='24' width='30' height='6' />
</svg>
<svg viewBox="0 -0.5 5 5" style="width:50px">
<path stroke="blue" d="M0 0h5M0 2h5M0 4h5" />
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<style>
a svg {
width: 40px;
}
</style>
<a href="#">
<svg viewBox="0 0 24 24">
<path d="M4 8h4V4H4v4zm6 12h4v-4h-4v4zm-6 0h4v-4H4v4zm0-6h4v-4H4v4zm6 0h4v-4h-4v4zm6-10v4h4V4h-4zm-6 4h4V4h-4v4zm6 6h4v-4h-4v4zm0 6h4v-4h-4v4z"></path>
</svg>
</a>