* {
    padding: 0;
    margin: 0;
    direction: rtl;
    
}

.all {
    width: 100%;
    height: 150vh;
    background: black;
}


.topbar{
    width:100%;height:120px;
    background:lightgray;
    display:flex;
    justify-content:center;
    align-items:center;
}

.btn{
    border:none;
    border-radius:12px;
    width:250px;
    height:50px;
    color:white;
    background:#0094ff;
    padding:10px;
    font-weight:700;
    margin:20px 0;
    justify-self:center;
    font-size:20px;
    cursor:pointer;

}