.btn-wsp{
    position:fixed;
    width:50px;
    height:50px;
    line-height: 51px;
    bottom:100px;
    right:25px;
    background:#25d366;
    color:#FFF;
    border-radius:50px;
    text-align:center;
    font-size:35px;
    box-shadow: 0px 1px 10px rgba(0,0,0,0.3);
    z-index:100;
    transition: all 300ms ease;
}
.btn-wsp:hover{
    background: #20ba5a;
}

#loading {
    position: fixed;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 9999;
}

.spinner {
    border: 16px solid #f3f3f3;
    border-top: 16px solid #07be94;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media only screen and (min-width:320px) and (max-width:768px){
    .btn-wsp{
        width:63px;
        height:63px;
        line-height: 66px;
	}
}