/* 由下向上 */
.bToT{
    animation: bToT 0.5s linear;
}
.bToT-yan{
    animation-delay: 0.3ms;
}
@keyframes bToT
{
    from {transform: translateY(100%); opacity: .5;}
    to {transform: translateY(0%); opacity: 1;}
}
 
@-webkit-keyframes bToT /* Safari 与 Chrome */
{
    from {transform: translateY(100%); opacity: .5;}
    to {transform: translateY(0%); opacity: 1;}
}

/* 放大  */

@keyframes aScale
{
    from {transform: scale(1.05);}
    to {transform: scale(1);}
}
 
@-webkit-keyframes aScale /* Safari 与 Chrome */
{
    from {transform: scale(1.05);}
    to {transform: scale(1);}
}
@keyframes aScale15
{
    from {transform: scale(1);}
    to {transform: scale(1.5);}
}
 
@-webkit-keyframes aScale15 /* Safari 与 Chrome */
{
    from {transform: scale(1);}
    to {transform: scale(1.5);}
}



@keyframes scaleOpt
{
    from {transform: translate(-50%,-50%) scale(1); opacity: .5;}
    to {transform: translate(-50%,-50%) scale(2); opacity: 0;}
}
 
@-webkit-keyframes scaleOpt /* Safari 与 Chrome */
{
    from {transform: translate(-50%,-50%) scale(1); opacity: .5;}
    to {transform: translate(-50%,-50%) scale(2); opacity: 0;}
}

/* hideToTop */
@keyframes hideToTop
{
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    20% {
        opacity: .5;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}
 
@-webkit-keyframes hideToTop /* Safari 与 Chrome */
{
    0% {
        opacity: 1;
        transform: translateY(0px);
    }
    20% {
        opacity: .5;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}



/* svg */
@keyframes indexsvg {
    0% {
      stroke-dashoffset: 100;
    }
    100% {
      stroke-dashoffset: -50;
    }
}
/* cloud */

@keyframes cloud
{
    from {left: 100%;}
    to {left: -50%;}
}
 
@-webkit-keyframes cloud /* Safari 与 Chrome */
{
    from {left: 100%;}
    to {left: -50%;}
}
.btnHover{
    transition: all 0.2s linear;
}
.btnHover:hover{
    transform: translate(-3px, -3px);
    box-shadow: 0 0 10px rgba(0,150,187,0.5);
}