#esola_scrollTopBtn 
{
    display: none;  /*Hidden by default */
    position: fixed; /* Fixed/sticky position */
    bottom: 20px; /* Place the button at the bottom of the page */
    right: 30px; /* Place the button 30px from the right */
    z-index: 199; /* Make sure it does not overlap */
    border: none; /* Remove borders */
    outline: none; /* Remove outline */
    background-color: #D3D3D3; /* Set a background color */
    color: black; /* Text color */
    cursor: pointer; /* Add a mouse pointer on hover */
    padding: auto; /* Some padding */
    border-radius: 25px; /* Rounded corners */
    moz-border-radius: 25px; /* Rounded corners */
    webkit-border-radius: 25px; /* Rounded corners */
    font-size: 15px; /* Increase font size */
    height:50px;
    width:50px;
}

#esola_scrollTopBtn:hover 
{
    background-color: #555; /* Add a dark-grey background on hover */
}