@font-face {
    font-family: IRANSans;
    src: url("../Fonts/IRANSans.ttf");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

body {
    font-family: "IRANSans" !important;
}

button.back-to-top {
    margin: 0 !important;
    padding: 0 !important;
    background: #fff;
    height: 0px;
    width: 0px;
    overflow: hidden;
    border-radius: 50px;
    -webkit-border-radius: 50px;
    -moz-border-radius: 50px;
    color: transparent;
    clear: both;
    visibility: hidden;
    position: fixed;
    cursor: pointer;
    display: block;
    border: none;
    left: 50px;
    bottom: 75px;
    font-size: 0px;
    outline: 0 !important;
    z-index: 99;
    -webkit-transition: all .3s ease-in-out;
    transition: all .3s ease-in-out;
}

button.back-to-top::before,
button.back-to-top::after {
    content: "";
    display: block;
    vertical-align: middle;
    border-bottom: solid 15px #AF0202;
    border-left: solid 9px transparent;
    line-height: 0;
    border-right: solid 10px transparent;
    height: 0;
    margin: 18px auto 0;
    width: 0;
    border-radius: 20px;
    visibility: hidden;
}

button.back-to-top.show::after,
button.back-to-top.show::before {
    visibility: visible;
}

button.back-to-top::after {
    border-bottom-color: #fff;
    position: relative;
    top: -24px;
}

button.back-to-top.show {
    display: block;
    background: #fff;
    color: #00ab6c;
    font-size: 25px;
    left: 25px;
    bottom: 50px;
    height: 50px;
    width: 50px;
    visibility: visible;
    box-shadow: 0px 2px 4px 1px rgba(0, 0, 0, 0.25);
    -webkit-box-shadow: 0px 2px 4px 1px rgba(0, 0, 0, 0.25);
    -moz-box-shadow: 0px 2px 4px 1px rgba(0, 0, 0, 0.25);
}

button.back-to-top.show:active {
    box-shadow: 0px 4px 8px 2px rgba(0, 0, 0, 0.25);
    -webkit-box-shadow: 0px 4px 8px 2px rgba(0, 0, 0, 0.25);
    -moz-box-shadow: 0px 4px 8px 2px rgba(0, 0, 0, 0.25);
}