.converter-icon {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    background-color: #4CAF50;
    color: white;
    text-align: center;
    line-height: 50px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1000;
}

.converter-icon:hover {
    background-color: #45a049;
}