<div class="kayan-yazi">
<p>?? Şimdi Al! Tüm Ürünlerde %20 İndirim! ??</p>
</div>

<style>
.kayan-yazi {
width: 100%;
overflow: hidden;
background: #ffe600;
white-space: nowrap;
box-sizing: border-box;
}

.kayan-yazi p {
display: inline-block;
padding-left: 100%;
animation: kaydir 10s linear infinite;
font-size: 16px;
font-weight: bold;
color: #000;
margin: 0;
}

@keyframes kaydir {
from { transform: translateX(0); }
to { transform: translateX(-100%); }
}
</style>