header {
    display: block;
    position: relative;
    top: 0;
    padding: 10px;
    width: 100%;
    text-align: center;
    border-bottom: 3px solid #cb0e00;
}
[dir='rtl'] header h4 {
    display:block;
    color:#fff;
    text-align:center;
    direction:rtl;
    padding:10px;
}
[dir='ltr'] header h4 {
    display: block;
    color: #fff;
    text-align: center;
    direction: ltr;
}

.btn {
    margin: 0 7px;
}

@media(min-width:320px) and (max-width:480px) {
    header h4{
        font-size : 1.1rem;
    }

    .btn{
        margin: 0 !important;
    }
}