html,
body,
#app {
    width: 100%;
    height: 100%;
}
#app {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

* {
    margin: 0;
    padding: 0;
}

.spinner {
    width: 40px;
    height: 40px;
    position: relative;
}

.double-bounce1,
.double-bounce2 {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: rgb(106, 161, 255);
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;

    -webkit-animation: sk-bounce 2s infinite ease-in-out;
    animation: sk-bounce 2s infinite ease-in-out;
}

.double-bounce2 {
    -webkit-animation-delay: -1s;
    animation-delay: -1s;
}

@-webkit-keyframes sk-bounce {
    0%,
    100% {
        -webkit-transform: scale(0);
    }

    50% {
        -webkit-transform: scale(1);
    }
}

@keyframes sk-bounce {
    0%,
    100% {
        transform: scale(0);
        -webkit-transform: scale(0);
    }

    50% {
        transform: scale(1);
        -webkit-transform: scale(1);
    }
}