.callback-bt {
    background:#38a3fd;
    border:2px solid #38a3fd;
    border-radius:50%;
    box-shadow:0 8px 10px rgba(56,163,253,0.3);
    cursor:pointer;
    height:68px;
    text-align:center;
    width:68px;
    position: fixed;
    left: 8%;
    bottom: 18%;
    z-index:999;
    transition:.3s;
    -webkit-animation:hoverWave linear 1s infinite;
    animation:hoverWave linear 1s infinite;
}

.callback-bt .text-call{
    height:68px;
    width:68px;
    border-radius:50%;
    position:relative;
    overflow:hidden;
}

.callback-bt .text-call span {
    text-align: center;
    color:#38a3fd;
    opacity: 0;
    font-size: 0;
    position:absolute;
    right: 4px;
    top: 22px;
    line-height: 14px;
    font-weight: 600;
    text-transform: uppercase;
    transition: opacity .3s linear;
    font-family: 'montserrat', Arial, Helvetica, sans-serif;
}

.callback-bt .text-call:hover span {
    opacity: 1;
    font-size: 11px;
}
.callback-bt:hover i {
    display:none;
}

.callback-bt:hover {
    z-index:1;
    background:#fff;
    color:transparent;
    transition:.3s;
}
.callback-bt:hover i {
    color:#38a3fd;
    font-size:40px;
    transition:.3s;
}
.callback-bt img {
    position: relative;
    top: 10px;
    width: 50px;
    transition:.3s;
    line-height: 66px;transition: .5s ease-in-out;
}

.callback-bt img  {
    animation: 1200ms ease 0s normal none 1 running shake;
    animation-iteration-count: infinite;
    -webkit-animation: 1200ms ease 0s normal none 1 running shake;
    -webkit-animation-iteration-count: infinite;
}

@-webkit-keyframes hoverWave {
    0% {
        box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 0 rgba(56,163,253,0.2),0 0 0 0 rgba(56,163,253,0.2)
    }
    40% {
        box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 15px rgba(56,163,253,0.2),0 0 0 0 rgba(56,163,253,0.2)
    }
    80% {
        box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 30px rgba(56,163,253,0),0 0 0 26.7px rgba(56,163,253,0.067)
    }
    100% {
        box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 30px rgba(56,163,253,0),0 0 0 40px rgba(56,163,253,0.0)
    }
}@keyframes hoverWave {
     0% {
         box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 0 rgba(56,163,253,0.2),0 0 0 0 rgba(56,163,253,0.2)
     }
     40% {
         box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 15px rgba(56,163,253,0.2),0 0 0 0 rgba(56,163,253,0.2)
     }
     80% {
         box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 30px rgba(56,163,253,0),0 0 0 26.7px rgba(56,163,253,0.067)
     }
     100% {
         box-shadow:0 8px 10px rgba(56,163,253,0.3),0 0 0 30px rgba(56,163,253,0),0 0 0 40px rgba(56,163,253,0.0)
     }
 }

/* animations icon */

@keyframes shake {
    0% {
        transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
    }
    10% {
        transform: rotateZ(-30deg);
        -ms-transform: rotateZ(-30deg);
        -webkit-transform: rotateZ(-30deg);
    }
    20% {
        transform: rotateZ(15deg);
        -ms-transform: rotateZ(15deg);
        -webkit-transform: rotateZ(15deg);
    }
    30% {
        transform: rotateZ(-10deg);
        -ms-transform: rotateZ(-10deg);
        -webkit-transform: rotateZ(-10deg);
    }
    40% {
        transform: rotateZ(7.5deg);
        -ms-transform: rotateZ(7.5deg);
        -webkit-transform: rotateZ(7.5deg);
    }
    50% {
        transform: rotateZ(-6deg);
        -ms-transform: rotateZ(-6deg);
        -webkit-transform: rotateZ(-6deg);
    }
    60% {
        transform: rotateZ(5deg);
        -ms-transform: rotateZ(5deg);
        -webkit-transform: rotateZ(5deg);
    }
    70% {
        transform: rotateZ(-4.28571deg);
        -ms-transform: rotateZ(-4.28571deg);
        -webkit-transform: rotateZ(-4.28571deg);
    }
    80% {
        transform: rotateZ(3.75deg);
        -ms-transform: rotateZ(3.75deg);
        -webkit-transform: rotateZ(3.75deg);
    }
    90% {
        transform: rotateZ(-3.33333deg);
        -ms-transform: rotateZ(-3.33333deg);
        -webkit-transform: rotateZ(-3.33333deg);
    }
    100% {
        transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
    }
}

@-webkit-keyframes shake {
    0% {
        transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
    }
    10% {
        transform: rotateZ(-30deg);
        -ms-transform: rotateZ(-30deg);
        -webkit-transform: rotateZ(-30deg);
    }
    20% {
        transform: rotateZ(15deg);
        -ms-transform: rotateZ(15deg);
        -webkit-transform: rotateZ(15deg);
    }
    30% {
        transform: rotateZ(-10deg);
        -ms-transform: rotateZ(-10deg);
        -webkit-transform: rotateZ(-10deg);
    }
    40% {
        transform: rotateZ(7.5deg);
        -ms-transform: rotateZ(7.5deg);
        -webkit-transform: rotateZ(7.5deg);
    }
    50% {
        transform: rotateZ(-6deg);
        -ms-transform: rotateZ(-6deg);
        -webkit-transform: rotateZ(-6deg);
    }
    60% {
        transform: rotateZ(5deg);
        -ms-transform: rotateZ(5deg);
        -webkit-transform: rotateZ(5deg);
    }
    70% {
        transform: rotateZ(-4.28571deg);
        -ms-transform: rotateZ(-4.28571deg);
        -webkit-transform: rotateZ(-4.28571deg);
    }
    80% {
        transform: rotateZ(3.75deg);
        -ms-transform: rotateZ(3.75deg);
        -webkit-transform: rotateZ(3.75deg);
    }
    90% {
        transform: rotateZ(-3.33333deg);
        -ms-transform: rotateZ(-3.33333deg);
        -webkit-transform: rotateZ(-3.33333deg);
    }
    100% {
        transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
    }
}