/* ///////////////////////////// */
.topBtn {
 display: block;
 position: fixed;
 right: 30px;
 bottom: 20px;
 box-sizing: border-box;
 padding-top: 30px;
 width: 70px;
 height: 70px;
 border-radius: 40px;
 background-color: #e73930;
 color: #ffffff;
 text-align: center;
 text-decoration: none;
 font-weight: bold;
 font-size: 19px;
 line-height: 22px;
}

.topBtn:before {
 position: absolute;
 top: 10px;
 left: 0;
 width: 100%;
 content: "\25B2";
 text-align: center;
 font-size: 20px;
}