.UIBackTopTopControl:hover {
   
    background-color: rgb(152 17 17);
    color:#ffffff;
  	border: 1px solid #ffffff;
}
.UIBackTopTopControl {
    cursor: pointer;
    position: fixed;
    bottom: 10px;
    right: 35px;
    background-color: #dddddd;
    z-index: 10;
    width: 40px;
    height: 40px;
    border-radius:1000px;
    color:#970000;
    font-size: 25px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-align: center;
    border: 1px solid #ffffff;
    font-weight: 900;
    font-family: 'Font Awesome 5 Pro';
    line-height: 40px;
}
.UIBackTopTopControl:before {
    content: "\f106";
}