#myBtn {
    width: 50px;
    height: 50px;
    display: none;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: rgb(238, 238, 238);
    color: rgb(168, 168, 168);
    cursor: pointer;
    border-radius: 50px;
}

#myBtn:hover {
    background-color: rgb(85, 85, 85);
}

.rightBtn:hover {
    background-color: rgb(85, 85, 85);
}

*/ .rightBtn {
    color: #212529;
    background-color: #f8f9fa;
    border-color: #f8f9fa;
}

.rightBtn:hover {
    color: #212529;
    background-color: #e2e6ea;
    border-color: #dae0e5;
}

.rightBtn:focus,
.rightBtn.focus {
    color: #212529;
    background-color: #e2e6ea;
    border-color: #dae0e5;
    box-shadow: 0 0 0 0.2rem rgba(216, 217, 219, 0.5);
}

.rightBtn.disabled,
.rightBtn:disabled {
    color: #212529;
    background-color: #f8f9fa;
    border-color: #f8f9fa;
}

.rightBtn:not(:disabled):not(.disabled):active,
.rightBtn:not(:disabled):not(.disabled).active,
.show>.rightBtn.dropdown-toggle {
    color: #212529;
    background-color: #dae0e5;
    border-color: #d3d9df;
}

.rightBtn:not(:disabled):not(.disabled):active:focus,
.rightBtn:not(:disabled):not(.disabled).active:focus,
.show>.rightBtn.dropdown-toggle:focus {
    box-shadow: 0 0 0 0.2rem rgba(216, 217, 219, 0.5);
}